zulip/frontend_tests/casperjs/modules/casper.js

2124 lines
70 KiB
JavaScript

/*!
* Casper is a navigation utility for PhantomJS.
*
* Documentation: http://casperjs.org/
* Repository: http://github.com/n1k0/casperjs
*
* Copyright (c) 2011-2012 Nicolas Perriault
*
* Part of source code is Copyright Joyent, Inc. and other Node contributors.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
/*global CasperError console exports phantom require __utils__*/
var colorizer = require('colorizer');
var events = require('events');
var fs = require('fs');
var http = require('http');
var mouse = require('mouse');
var pagestack = require('pagestack');
var qs = require('querystring');
var tester = require('tester');
var utils = require('utils');
var f = utils.format;
var defaultUserAgent = phantom.defaultPageSettings.userAgent
.replace('PhantomJS', f("CasperJS/%s", phantom.casperVersion) + '+Phantomjs');
exports.create = function create(options) {
"use strict";
return new Casper(options);
};
/**
* Shortcut to build an XPath selector object.
*
* @param String expression The XPath expression
* @return Object
* @see http://casperjs.org/selectors.html
*/
function selectXPath(expression) {
"use strict";
return {
type: 'xpath',
path: expression,
toString: function() {
return this.type + ' selector: ' + this.path;
}
};
}
exports.selectXPath = selectXPath;
/**
* Main Casper object.
*
* @param Object options Casper options
*/
var Casper = function Casper(options) {
"use strict";
/*jshint maxstatements:40*/
// init & checks
if (!(this instanceof Casper)) {
return new Casper(options);
}
// default options
this.defaults = {
clientScripts: [],
colorizerType: 'Colorizer',
exitOnError: true,
logLevel: "error",
httpStatusHandlers: {},
safeLogs: true,
onAlert: null,
onDie: null,
onError: null,
onLoadError: null,
onPageInitialized: null,
onResourceReceived: null,
onResourceRequested: null,
onStepComplete: null,
onStepTimeout: function _onStepTimeout(timeout, stepNum) {
this.die("Maximum step execution timeout exceeded for step " + stepNum);
},
onTimeout: function _onTimeout(timeout) {
this.die(f("Script timeout of %dms reached, exiting.", timeout));
},
onWaitTimeout: function _onWaitTimeout(timeout) {
this.die(f("Wait timeout of %dms expired, exiting.", timeout));
},
page: null,
pageSettings: {
localToRemoteUrlAccessEnabled: true,
userAgent: defaultUserAgent
},
remoteScripts: [],
stepTimeout: null,
timeout: null,
verbose: false,
waitTimeout: 5000
};
// options
this.options = utils.mergeObjects(this.defaults, options);
// properties
this.checker = null;
this.cli = phantom.casperArgs;
this.colorizer = this.getColorizer();
this.currentResponse = undefined;
this.currentUrl = 'about:blank';
this.currentHTTPStatus = null;
this.history = [];
this.loadInProgress = false;
this.navigationRequested = false;
this.logFormats = {};
this.logLevels = ["debug", "info", "warning", "error"];
this.logStyles = {
debug: 'INFO',
info: 'PARAMETER',
warning: 'COMMENT',
error: 'ERROR'
};
this.mouse = mouse.create(this);
this.page = null;
this.pendingWait = false;
this.popups = pagestack.create();
this.requestUrl = 'about:blank';
this.resources = [];
this.result = {
log: [],
status: "success",
time: 0
};
this.started = false;
this.step = -1;
this.steps = [];
this.test = tester.create(this);
// init phantomjs error handler
this.initErrorHandler();
this.on('error', function(msg, backtrace) {
if (msg === this.test.SKIP_MESSAGE) {
return;
}
var c = this.getColorizer();
var match = /^(.*): __mod_error(.*):: (.*)/.exec(msg);
var notices = [];
if (match && match.length === 4) {
notices.push(' in module ' + match[2]);
msg = match[3];
}
console.error(c.colorize(msg, 'RED_BAR', 80));
notices.forEach(function(notice) {
console.error(c.colorize(notice, 'COMMENT'));
});
backtrace.forEach(function(item) {
var message = fs.absolute(item.file) + ":" + c.colorize(item.line, "COMMENT");
if (item['function']) {
message += " in " + c.colorize(item['function'], "PARAMETER");
}
console.error(" " + message);
});
});
// deprecated feature event handler
this.on('deprecated', function onDeprecated(message) {
this.warn('[deprecated] ' + message);
});
// dispatching an event when instance has been constructed
this.emit('init');
};
// Casper class is an EventEmitter
utils.inherits(Casper, events.EventEmitter);
/**
* Go a step back in browser's history
*
* @return Casper
*/
Casper.prototype.back = function back() {
"use strict";
this.checkStarted();
return this.then(function _step() {
this.emit('back');
this.evaluate(function _evaluate() {
history.back();
});
});
};
/**
* Encodes a resource using the base64 algorithm synchronously using
* client-side XMLHttpRequest.
*
* NOTE: we cannot use window.btoa() for some strange reasons here.
*
* @param String url The url to download
* @param String method The method to use, optional: default GET
* @param String data The data to send, optional
* @return string Base64 encoded result
*/
Casper.prototype.base64encode = function base64encode(url, method, data) {
"use strict";
return this.evaluate(function _evaluate(url, method, data) {
return __utils__.getBase64(url, method, data);
}, url, method, data);
};
/**
* Proxy method for WebPage#render. Adds a clipRect parameter for
* automatically set page clipRect setting values and sets it back once
* done. If the cliprect parameter is omitted, the full page viewport
* area will be rendered.
*
* @param String targetFile A target filename
* @param mixed clipRect An optional clipRect object (optional)
* @return Casper
*/
Casper.prototype.capture = function capture(targetFile, clipRect) {
"use strict";
/*jshint maxstatements:20*/
this.checkStarted();
var previousClipRect;
targetFile = fs.absolute(targetFile);
if (clipRect) {
if (!utils.isClipRect(clipRect)) {
throw new CasperError("clipRect must be a valid ClipRect object.");
}
previousClipRect = this.page.clipRect;
this.page.clipRect = clipRect;
this.log(f("Capturing page to %s with clipRect %s", targetFile, JSON.stringify(clipRect)), "debug");
} else {
this.log(f("Capturing page to %s", targetFile), "debug");
}
if (!this.page.render(this.filter('capture.target_filename', targetFile) || targetFile)) {
this.log(f("Failed to save screenshot to %s; please check permissions", targetFile), "error");
} else {
this.log(f("Capture saved to %s", targetFile), "info");
this.emit('capture.saved', targetFile);
}
if (previousClipRect) {
this.page.clipRect = previousClipRect;
}
return this;
};
/**
* Returns a Base64 representation of a binary image capture of the current
* page, or an area within the page, in a given format.
*
* Supported image formats are `bmp`, `jpg`, `jpeg`, `png`, `ppm`, `tiff`,
* `xbm` and `xpm`.
*
* @param String format The image format
* @param String|Object|undefined selector DOM CSS3/XPath selector or clipRect object (optional)
* @return Casper
*/
Casper.prototype.captureBase64 = function captureBase64(format, area) {
"use strict";
/*jshint maxstatements:20*/
this.checkStarted();
var base64, previousClipRect, formats = ['bmp', 'jpg', 'jpeg', 'png', 'ppm', 'tiff', 'xbm', 'xpm'];
if (formats.indexOf(format.toLowerCase()) === -1) {
throw new CasperError(f('Unsupported format "%s"', format));
}
if (utils.isClipRect(area)) {
// if area is a clipRect object
this.log(f("Capturing base64 %s representation of %s", format, utils.serialize(area)), "debug");
previousClipRect = this.page.clipRect;
this.page.clipRect = area;
base64 = this.page.renderBase64(format);
} else if (utils.isValidSelector(area)) {
// if area is a selector string or object
this.log(f("Capturing base64 %s representation of %s", format, area), "debug");
base64 = this.captureBase64(format, this.getElementBounds(area));
} else {
// whole page capture
this.log(f("Capturing base64 %s representation of page", format), "debug");
base64 = this.page.renderBase64(format);
}
if (previousClipRect) {
this.page.clipRect = previousClipRect;
}
return base64;
};
/**
* Captures the page area matching the provided selector.
*
* @param String targetFile Target destination file path.
* @param String selector DOM CSS3/XPath selector
* @return Casper
*/
Casper.prototype.captureSelector = function captureSelector(targetFile, selector) {
"use strict";
return this.capture(targetFile, this.getElementBounds(selector));
};
/**
* Checks for any further navigation step to process.
*
* @param Casper self A self reference
* @param function onComplete An options callback to apply on completion
*/
Casper.prototype.checkStep = function checkStep(self, onComplete) {
"use strict";
if (self.pendingWait || self.loadInProgress || self.navigationRequested) {
return;
}
var step = self.steps[self.step++];
if (utils.isFunction(step)) {
self.runStep(step);
} else {
self.result.time = new Date().getTime() - self.startTime;
self.log(f("Done %s steps in %dms", self.steps.length, self.result.time), "info");
clearInterval(self.checker);
self.step -= 1;
self.emit('run.complete');
if (utils.isFunction(onComplete)) {
onComplete.call(self, self);
} else {
// default behavior is to exit
self.exit();
}
}
};
/**
* Checks if this instance is started.
*
* @return Boolean
* @throws CasperError
*/
Casper.prototype.checkStarted = function checkStarted() {
"use strict";
if (!this.started) {
throw new CasperError(f("Casper is not started, can't execute `%s()`",
checkStarted.caller.name));
}
};
/**
* Clears the current page execution environment context. Useful to avoid
* having previously loaded DOM contents being still active (refs #34).
*
* Think of it as a way to stop javascript execution within the remote DOM
* environment.
*
* @return Casper
*/
Casper.prototype.clear = function clear() {
"use strict";
this.checkStarted();
this.page.content = '';
return this;
};
/**
* Emulates a click on the element from the provided selector using the mouse
* pointer, if possible.
*
* In case of success, `true` is returned, `false` otherwise.
*
* @param String selector A DOM CSS3 compatible selector
* @return Boolean
*/
Casper.prototype.click = function click(selector) {
"use strict";
this.checkStarted();
var success = this.mouseEvent('click', selector);
this.evaluate(function(selector) {
var element = __utils__.findOne(selector);
if (element) {
element.focus();
}
}, selector);
return success;
};
/**
* Emulates a click on the element having `label` as innerText. The first
* element matching this label will be selected, so use with caution.
*
* @param String label Element innerText value
* @param String tag An element tag name (eg. `a` or `button`) (optional)
* @return Boolean
*/
Casper.prototype.clickLabel = function clickLabel(label, tag) {
"use strict";
this.checkStarted();
tag = tag || "*";
var escapedLabel = label.toString().replace(/"/g, '\\"');
var selector = selectXPath(f('//%s[text()="%s"]', tag, escapedLabel));
return this.click(selector);
};
/**
* Configures HTTP authentication parameters. Will try parsing auth credentials from
* the passed location first, then check for configured settings if any.
*
* @param String location Requested url
* @param Object settings Request settings
* @return Casper
*/
Casper.prototype.configureHttpAuth = function configureHttpAuth(location, settings) {
"use strict";
var username, password, httpAuthMatch = location.match(/^https?:\/\/(.+):(.+)@/i);
this.checkStarted();
if (httpAuthMatch) {
this.page.settings.userName = httpAuthMatch[1];
this.page.settings.password = httpAuthMatch[2];
} else if (utils.isObject(settings) && settings.username) {
this.page.settings.userName = settings.username;
this.page.settings.password = settings.password;
} else {
return;
}
this.emit('http.auth', username, password);
this.log("Setting HTTP authentication for user " + username, "info");
return this;
};
/**
* Creates a step definition.
*
* @param Function fn The step function to call
* @param Object options Step options
* @return Function The final step function
*/
Casper.prototype.createStep = function createStep(fn, options) {
"use strict";
if (!utils.isFunction(fn)) {
throw new CasperError("createStep(): a step definition must be a function");
}
fn.options = utils.isObject(options) ? options : {};
this.emit('step.created', fn);
return fn;
};
/**
* Logs the HTML code of the current page.
*
* @param String selector A DOM CSS3/XPath selector (optional)
* @param Boolean outer Whether to fetch outer HTML contents (default: false)
* @return Casper
*/
Casper.prototype.debugHTML = function debugHTML(selector, outer) {
"use strict";
this.checkStarted();
return this.echo(this.getHTML(selector, outer));
};
/**
* Logs the textual contents of the current page.
*
* @return Casper
*/
Casper.prototype.debugPage = function debugPage() {
"use strict";
this.checkStarted();
this.echo(this.evaluate(function _evaluate() {
return document.body.textContent || document.body.innerText;
}));
return this;
};
/**
* Exit phantom on failure, with a logged error message.
*
* @param String message An optional error message
* @param Number status An optional exit status code (must be > 0)
* @return Casper
*/
Casper.prototype.die = function die(message, status) {
"use strict";
this.result.status = "error";
this.result.time = new Date().getTime() - this.startTime;
if (!utils.isString(message) || !message.length) {
message = "Suite explicitely interrupted without any message given.";
}
this.log(message, "error");
this.echo(message, "ERROR");
this.emit('die', message, status);
if (utils.isFunction(this.options.onDie)) {
this.options.onDie.call(this, this, message, status);
}
return this.exit(~~status > 0 ? ~~status : 1);
};
/**
* Downloads a resource and saves it on the filesystem.
*
* @param String url The url of the resource to download
* @param String targetPath The destination file path
* @param String method The HTTP method to use (default: GET)
* @param String data Optional data to pass performing the request
* @return Casper
*/
Casper.prototype.download = function download(url, targetPath, method, data) {
"use strict";
this.checkStarted();
var cu = require('clientutils').create(utils.mergeObjects({}, this.options));
try {
fs.write(targetPath, cu.decode(this.base64encode(url, method, data)), 'wb');
this.emit('downloaded.file', targetPath);
this.log(f("Downloaded and saved resource in %s", targetPath));
} catch (e) {
this.log(f("Error while downloading %s to %s: %s", url, targetPath, e), "error");
}
return this;
};
/**
* Iterates over the values of a provided array and execute a callback
* for @ item.
*
* @param Array array
* @param Function fn Callback: function(self, item, index)
* @return Casper
*/
Casper.prototype.each = function each(array, fn) {
"use strict";
if (!utils.isArray(array)) {
this.log("each() only works with arrays", "error");
return this;
}
(function _each(self) {
array.forEach(function _forEach(item, i) {
fn.call(self, self, item, i);
});
})(this);
return this;
};
/**
* Prints something to stdout.
*
* @param String text A string to echo to stdout
* @param String style An optional style name
* @param Number pad An optional pad value
* @return Casper
*/
Casper.prototype.echo = function echo(text, style, pad) {
"use strict";
if (!utils.isString(text)) {
try {
text = text.toString();
} catch (e) {
try {
text = utils.serialize(text);
} catch (e2) {
text = '';
}
}
}
var message = style ? this.colorizer.colorize(text, style, pad) : text;
console.log(this.filter('echo.message', message) || message);
return this;
};
/**
* Evaluates an expression in the page context, a bit like what
* WebPage#evaluate does, but the passed function can also accept
* parameters if a context Object is also passed:
*
* casper.evaluate(function(username, password) {
* document.querySelector('#username').value = username;
* document.querySelector('#password').value = password;
* document.querySelector('#submit').click();
* }, 'Bazoonga', 'baz00nga');
*
* @param Function fn The function to be evaluated within current page DOM
* @param Object context Object containing the parameters to inject into the function
* @return mixed
* @see WebPage#evaluate
*/
Casper.prototype.evaluate = function evaluate(fn, context) {
"use strict";
this.checkStarted();
// preliminary checks
if (!utils.isFunction(fn) && !utils.isString(fn)) { // phantomjs allows functions defs as string
throw new CasperError("evaluate() only accepts functions or strings");
}
// ensure client utils are always injected
this.injectClientUtils();
// function context
if (arguments.length === 1) {
return this.page.evaluate(fn);
} else if (arguments.length === 2) {
// check for closure signature if it matches context
if (utils.isObject(context) && eval(fn).length === Object.keys(context).length) {
context = utils.objectValues(context);
} else {
context = [context];
}
} else {
// phantomjs-style signature
context = [].slice.call(arguments).slice(1);
}
return this.page.evaluate.apply(this.page, [fn].concat(context));
};
/**
* Evaluates an expression within the current page DOM and die() if it
* returns false.
*
* @param function fn The expression to evaluate
* @param String message The error message to log
* @param Number status An optional exit status code (must be > 0)
*
* @return Casper
*/
Casper.prototype.evaluateOrDie = function evaluateOrDie(fn, message, status) {
"use strict";
this.checkStarted();
if (!this.evaluate(fn)) {
return this.die(message, status);
}
return this;
};
/**
* Checks if an element matching the provided DOM CSS3/XPath selector exists in
* current page DOM.
*
* @param String selector A DOM CSS3/XPath selector
* @return Boolean
*/
Casper.prototype.exists = function exists(selector) {
"use strict";
this.checkStarted();
return this.evaluate(function _evaluate(selector) {
return __utils__.exists(selector);
}, selector);
};
/**
* Exits phantom.
*
* @param Number status Status
* @return Casper
*/
Casper.prototype.exit = function exit(status) {
"use strict";
this.emit('exit', status);
phantom.exit(status);
};
/**
* Fetches plain text contents contained in the DOM element(s) matching a given CSS3/XPath
* selector.
*
* @param String selector A DOM CSS3/XPath selector
* @return String
*/
Casper.prototype.fetchText = function fetchText(selector) {
"use strict";
this.checkStarted();
return this.evaluate(function _evaluate(selector) {
return __utils__.fetchText(selector);
}, selector);
};
/**
* Fills a form with provided field values.
*
* @param String selector A DOM CSS3/XPath selector to the target form to fill
* @param Object vals Field values
* @param Boolean submit Submit the form?
*/
Casper.prototype.fill = function fill(selector, vals, submit) {
"use strict";
this.checkStarted();
submit = submit === true ? submit : false;
if (!utils.isObject(vals)) {
throw new CasperError("Form values must be provided as an object");
}
this.emit('fill', selector, vals, submit);
var fillResults = this.evaluate(function _evaluate(selector, values) {
return __utils__.fill(selector, values);
}, selector, vals);
if (!fillResults) {
throw new CasperError("Unable to fill form");
} else if (fillResults.errors.length > 0) {
throw new CasperError(f('Errors encountered while filling form: %s',
fillResults.errors.join('; ')));
}
// File uploads
if (fillResults.files && fillResults.files.length > 0) {
if (utils.isObject(selector) && selector.type === 'xpath') {
this.warn('Filling file upload fields is currently not supported using ' +
'XPath selectors; Please use a CSS selector instead.');
} else {
(function _each(self) {
fillResults.files.forEach(function _forEach(file) {
var fileFieldSelector = [selector, 'input[name="' + file.name + '"]'].join(' ');
self.page.uploadFile(fileFieldSelector, file.path);
});
})(this);
}
}
// Form submission?
if (submit) {
this.evaluate(function _evaluate(selector) {
var form = __utils__.findOne(selector);
var method = (form.getAttribute('method') || "GET").toUpperCase();
var action = form.getAttribute('action') || "unknown";
__utils__.log('submitting form to ' + action + ', HTTP ' + method, 'info');
if (typeof form.submit === "function") {
form.submit();
} else {
// http://www.spiration.co.uk/post/1232/Submit-is-not-a-function
form.submit.click();
}
}, selector);
}
};
/**
* Go a step forward in browser's history
*
* @return Casper
*/
Casper.prototype.forward = function forward(then) {
"use strict";
this.checkStarted();
return this.then(function _step() {
this.emit('forward');
this.evaluate(function _evaluate() {
history.forward();
});
});
};
/**
* Creates a new Colorizer instance. Sets `Casper.options.type` to change the
* colorizer type name (see the `colorizer` module).
*
* @return Object
*/
Casper.prototype.getColorizer = function getColorizer() {
"use strict";
return colorizer.create(this.options.colorizerType || 'Colorizer');
};
/**
* Retrieves current page contents, dealing with exotic other content types than HTML.
*
* @return String
*/
Casper.prototype.getPageContent = function getPageContent() {
"use strict";
this.checkStarted();
var contentType = utils.getPropertyPath(this, 'currentResponse.contentType');
if (!utils.isString(contentType)) {
return this.page.frameContent;
}
// for some reason webkit/qtwebkit will always enclose body contents within html tags
var sanitizedHtml = this.evaluate(function checkHtml() {
if (__utils__.findOne('head').childNodes.length === 0 &&
__utils__.findOne('body').childNodes.length === 1 &&
__utils__.findOne('body pre[style]')) {
return __utils__.findOne('body pre').textContent.trim();
}
});
return sanitizedHtml ? sanitizedHtml : this.page.frameContent;
};
/**
* Retrieves current document url.
*
* @return String
*/
Casper.prototype.getCurrentUrl = function getCurrentUrl() {
"use strict";
this.checkStarted();
var url = this.evaluate(function _evaluate() {
return document.location.href;
});
try {
return decodeURIComponent(url);
} catch (e) {
/*global unescape*/
return unescape(url);
}
};
/**
* Retrieves the value of an attribute on the first element matching the provided
* DOM CSS3/XPath selector.
*
* @param String selector A DOM CSS3/XPath selector
* @param String attribute The attribute name to lookup
* @return String The requested DOM element attribute value
*/
Casper.prototype.getElementAttribute =
Casper.prototype.getElementAttr = function getElementAttr(selector, attribute) {
"use strict";
this.checkStarted();
return this.evaluate(function _evaluate(selector, attribute) {
return document.querySelector(selector).getAttribute(attribute);
}, selector, attribute);
};
/**
* Retrieves boundaries for a DOM element matching the provided DOM CSS3/XPath selector.
*
* @param String selector A DOM CSS3/XPath selector
* @return Object
*/
Casper.prototype.getElementBounds = function getElementBounds(selector) {
"use strict";
this.checkStarted();
if (!this.exists(selector)) {
throw new CasperError("No element matching selector found: " + selector);
}
var clipRect = this.evaluate(function _evaluate(selector) {
return __utils__.getElementBounds(selector);
}, selector);
if (!utils.isClipRect(clipRect)) {
throw new CasperError('Could not fetch boundaries for element matching selector: ' + selector);
}
return clipRect;
};
/**
* Retrieves information about the node matching the provided selector.
*
* @param String|Objects selector CSS3/XPath selector
* @return Object
*/
Casper.prototype.getElementInfo = function getElementInfo(selector) {
"use strict";
this.checkStarted();
if (!this.exists(selector)) {
throw new CasperError(f("Cannot get informations from %s: element not found.", selector));
}
return this.evaluate(function(selector) {
return __utils__.getElementInfo(selector);
}, selector);
};
/**
* Retrieves boundaries for all the DOM elements matching the provided DOM CSS3/XPath selector.
*
* @param String selector A DOM CSS3/XPath selector
* @return Array
*/
Casper.prototype.getElementsBounds = function getElementBounds(selector) {
"use strict";
this.checkStarted();
if (!this.exists(selector)) {
throw new CasperError("No element matching selector found: " + selector);
}
return this.evaluate(function _evaluate(selector) {
return __utils__.getElementsBounds(selector);
}, selector);
};
/**
* Retrieves a given form all of its field values.
*
* @param String selector A DOM CSS3/XPath selector
* @return Object
*/
Casper.prototype.getFormValues = function(selector) {
"use strict";
this.checkStarted();
if (!this.exists(selector)) {
throw new CasperError(f('Form matching selector "%s" not found', selector));
}
return this.evaluate(function(selector) {
return __utils__.getFormValues(selector);
}, selector);
};
/**
* Retrieves global variable.
*
* @param String name The name of the global variable to retrieve
* @return mixed
*/
Casper.prototype.getGlobal = function getGlobal(name) {
"use strict";
this.checkStarted();
var result = this.evaluate(function _evaluate(name) {
var result = {};
try {
result.value = JSON.stringify(window[name]);
} catch (e) {
var message = f("Unable to JSON encode window.%s: %s", name, e);
__utils__.log(message, "error");
result.error = message;
}
return result;
}, name);
if (!utils.isObject(result)) {
throw new CasperError(f('Could not retrieve global value for "%s"', name));
} else if ('error' in result) {
throw new CasperError(result.error);
} else if (utils.isString(result.value)) {
return JSON.parse(result.value);
}
};
/**
* Retrieves current HTML code matching the provided CSS3/XPath selector.
* Returns the HTML contents for the whole page if no arg is passed.
*
* @param String selector A DOM CSS3/XPath selector
* @param Boolean outer Whether to fetch outer HTML contents (default: false)
* @return String
*/
Casper.prototype.getHTML = function getHTML(selector, outer) {
"use strict";
this.checkStarted();
if (!selector) {
return this.page.frameContent;
}
if (!this.exists(selector)) {
throw new CasperError("No element matching selector found: " + selector);
}
return this.evaluate(function getSelectorHTML(selector, outer) {
var element = __utils__.findOne(selector);
return outer ? element.outerHTML : element.innerHTML;
}, selector, !!outer);
};
/**
* Retrieves current page title, if any.
*
* @return String
*/
Casper.prototype.getTitle = function getTitle() {
"use strict";
this.checkStarted();
return this.evaluate(function _evaluate() {
return document.title;
});
};
/**
* Handles received HTTP resource.
*
* @param Object resource PhantomJS HTTP resource
*/
Casper.prototype.handleReceivedResource = function(resource) {
"use strict";
/*jshint maxstatements:20*/
if (resource.stage !== "end") {
return;
}
this.resources.push(resource);
if (resource.url !== this.requestUrl) {
return;
}
this.currentHTTPStatus = null;
this.currentResponse = undefined;
if (utils.isHTTPResource(resource)) {
this.emit('page.resource.received', resource);
this.currentResponse = resource;
this.currentHTTPStatus = resource.status;
this.emit('http.status.' + resource.status, resource);
if (utils.isObject(this.options.httpStatusHandlers) &&
resource.status in this.options.httpStatusHandlers &&
utils.isFunction(this.options.httpStatusHandlers[resource.status])) {
this.options.httpStatusHandlers[resource.status].call(this, this, resource);
}
}
this.currentUrl = resource.url;
this.emit('location.changed', resource.url);
};
/**
* Initializes PhantomJS error handler.
*
*/
Casper.prototype.initErrorHandler = function initErrorHandler() {
"use strict";
var casper = this;
phantom.onError = function phantom_onError(msg, backtrace) {
casper.emit('error', msg, backtrace);
if (casper.options.exitOnError === true) {
casper.exit(1);
}
};
};
/**
* Injects configured local client scripts.
*
* @return Casper
*/
Casper.prototype.injectClientScripts = function injectClientScripts() {
"use strict";
this.checkStarted();
if (!this.options.clientScripts) {
return;
}
if (utils.isString(this.options.clientScripts)) {
this.options.clientScripts = [this.options.clientScripts];
}
if (!utils.isArray(this.options.clientScripts)) {
throw new CasperError("The clientScripts option must be an array");
}
this.options.clientScripts.forEach(function _forEach(script) {
if (this.page.injectJs(script)) {
this.log(f('Automatically injected %s client side', script), "debug");
} else {
this.warn('Failed injecting %s client side', script);
}
}.bind(this));
return this;
};
/**
* Injects Client-side utilities in current page context.
*
*/
Casper.prototype.injectClientUtils = function injectClientUtils() {
"use strict";
this.checkStarted();
var clientUtilsInjected = this.page.evaluate(function() {
return typeof __utils__ === "object";
});
if (true === clientUtilsInjected) {
return;
}
var clientUtilsPath = require('fs').pathJoin(phantom.casperPath, 'modules', 'clientutils.js');
if (true === this.page.injectJs(clientUtilsPath)) {
this.log("Successfully injected Casper client-side utilities", "debug");
} else {
this.warn("Failed to inject Casper client-side utilities");
}
// ClientUtils and Casper shares the same options
// These are not the lines I'm the most proud of in my life, but it works.
/*global __options*/
this.page.evaluate(function() {
window.__utils__ = new window.ClientUtils(__options);
}.toString().replace('__options', JSON.stringify(this.options)));
};
/**
* Loads and include remote client scripts to current page.
*
* @return Casper
*/
Casper.prototype.includeRemoteScripts = function includeRemoteScripts() {
"use strict";
var numScripts = this.options.remoteScripts.length, loaded = 0;
if (numScripts === 0) {
return this;
}
this.waitStart();
this.options.remoteScripts.forEach(function(scriptUrl) {
this.log(f("Loading remote script: %s", scriptUrl), "debug");
this.page.includeJs(scriptUrl, function() {
loaded++;
this.log(f("Remote script %s loaded", scriptUrl), "debug");
if (loaded === numScripts) {
this.log("All remote scripts loaded.", "debug");
this.waitDone();
}
}.bind(this));
}.bind(this));
return this;
};
/**
* Logs a message.
*
* @param String message The message to log
* @param String level The log message level (from Casper.logLevels property)
* @param String space Space from where the logged event occurred (default: "phantom")
* @return Casper
*/
Casper.prototype.log = function log(message, level, space) {
"use strict";
level = level && this.logLevels.indexOf(level) > -1 ? level : "debug";
space = space ? space : "phantom";
if (level === "error" && utils.isFunction(this.options.onError)) {
this.options.onError.call(this, this, message, space);
}
if (this.logLevels.indexOf(level) < this.logLevels.indexOf(this.options.logLevel)) {
return this; // skip logging
}
var entry = {
level: level,
space: space,
message: message,
date: new Date().toString()
};
if (level in this.logFormats && utils.isFunction(this.logFormats[level])) {
message = this.logFormats[level](message, level, space);
} else {
message = f('%s [%s] %s',
this.colorizer.colorize(f('[%s]', level), this.logStyles[level]),
space,
message);
}
if (this.options.verbose) {
this.echo(this.filter('log.message', message) || message); // direct output
}
this.result.log.push(entry);
this.emit('log', entry);
return this;
};
/**
* Emulates an event on the element from the provided selector using the mouse
* pointer, if possible.
*
* In case of success, `true` is returned, `false` otherwise.
*
* @param String type Type of event to emulate
* @param String selector A DOM CSS3 compatible selector
* @return Boolean
*/
Casper.prototype.mouseEvent = function mouseEvent(type, selector) {
"use strict";
this.checkStarted();
this.log("Mouse event '" + type + "' on selector: " + selector, "debug");
if (!this.exists(selector)) {
throw new CasperError(f("Cannot dispatch %s event on nonexistent selector: %s", type, selector));
}
if (this.evaluate(function(type, selector) {
return window.__utils__.mouseEvent(type, selector);
}, type, selector)) {
return true;
}
// fallback onto native QtWebKit mouse events
try {
return this.mouse.processEvent(type, selector);
} catch (e) {
this.log(f("Couldn't emulate '%s' event on %s: %s", type, selector, e), "error");
}
return false;
};
/**
* Performs an HTTP request, with optional settings.
*
* Available settings are:
*
* - String method: The HTTP method to use
* - Object data: The data to use to perform the request, eg. {foo: 'bar'}
* - Object headers: Custom request headers object, eg. {'Cache-Control': 'max-age=0'}
*
* @param String location The url to open
* @param Object settings The request settings (optional)
* @return Casper
*/
Casper.prototype.open = function open(location, settings) {
"use strict";
/*jshint maxstatements:30*/
var baseCustomHeaders = this.page.customHeaders,
customHeaders = settings && settings.headers || {};
this.checkStarted();
settings = utils.isObject(settings) ? settings : {};
settings.method = settings.method || "get";
// http method
// taken from https://github.com/ariya/phantomjs/blob/master/src/webpage.cpp#L302
var methods = ["get", "head", "put", "post", "delete"];
if (settings.method && (!utils.isString(settings.method) || methods.indexOf(settings.method) === -1)) {
throw new CasperError("open(): settings.method must be part of " + methods.join(', '));
}
// http data
if (settings.data) {
if (utils.isObject(settings.data)) { // query object
settings.data = qs.encode(settings.data);
} else if (!utils.isString(settings.data)) {
throw new CasperError("open(): invalid request settings data value: " + settings.data);
}
}
// clean location
location = utils.cleanUrl(location);
// current request url
this.configureHttpAuth(location, settings);
this.requestUrl = this.filter('open.location', location) || location;
this.emit('open', this.requestUrl, settings);
this.log(f('opening url: %s, HTTP %s', this.requestUrl, settings.method.toUpperCase()), "debug");
// reset resources
this.resources = [];
// custom headers
this.page.customHeaders = utils.mergeObjects(utils.clone(baseCustomHeaders), customHeaders);
// perfom request
this.page.openUrl(this.requestUrl, {
operation: settings.method,
data: settings.data
}, this.page.settings);
// revert base custom headers
this.page.customHeaders = baseCustomHeaders;
return this;
};
/**
* Reloads current page.
*
* @param Function then a next step function
* @return Casper
*/
Casper.prototype.reload = function reload(then) {
"use strict";
this.checkStarted();
// window.location.reload() is broken under phantomjs
this.then(function() {
this.open(this.getCurrentUrl());
});
if (utils.isFunction(then)) {
this.then(this.createStep(then));
}
};
/**
* Repeats a step a given number of times.
*
* @param Number times Number of times to repeat step
* @aram function then The step closure
* @return Casper
* @see Casper#then
*/
Casper.prototype.repeat = function repeat(times, then) {
"use strict";
for (var i = 0; i < times; i++) {
this.then(then);
}
return this;
};
/**
* Checks if a given resource was loaded by the remote page.
*
* @param Function/String/RegExp test A test function, string or regular expression.
* In case a string is passed, url matching will be tested.
* @return Boolean
*/
Casper.prototype.resourceExists = function resourceExists(test) {
"use strict";
this.checkStarted();
var testFn;
switch (utils.betterTypeOf(test)) {
case "string":
testFn = function _testResourceExists_String(res) {
return res.url.search(test) !== -1 && res.status !== 404;
};
break;
case "regexp":
testFn = function _testResourceExists_Regexp(res) {
return test.test(res.url) && res.status !== 404;
};
break;
case "function":
testFn = test;
testFn.name = "_testResourceExists_Function";
break;
default:
throw new CasperError("Invalid type");
}
return this.resources.some(testFn);
};
/**
* Runs the whole suite of steps.
*
* @param function onComplete an optional callback
* @param Number time an optional amount of milliseconds for interval checking
* @return Casper
*/
Casper.prototype.run = function run(onComplete, time) {
"use strict";
this.checkStarted();
if (!this.steps || this.steps.length < 1) {
throw new CasperError('No steps defined, aborting');
}
this.log(f("Running suite: %d step%s", this.steps.length, this.steps.length > 1 ? "s" : ""), "info");
this.emit('run.start');
this.checker = setInterval(this.checkStep, (time ? time: 100), this, onComplete);
return this;
};
/**
* Runs a step.
*
* @param Function step
*/
Casper.prototype.runStep = function runStep(step) {
"use strict";
this.checkStarted();
var skipLog = utils.isObject(step.options) && step.options.skipLog === true;
var stepInfo = f("Step %d/%d", this.step, this.steps.length);
var stepResult;
if (!skipLog && /^http/.test(this.getCurrentUrl())) {
this.log(stepInfo + f(' %s (HTTP %d)', this.getCurrentUrl(), this.currentHTTPStatus), "info");
}
if (utils.isNumber(this.options.stepTimeout) && this.options.stepTimeout > 0) {
var stepTimeoutCheckInterval = setInterval(function _check(self, start, stepNum) {
if (new Date().getTime() - start > self.options.stepTimeout) {
if ((self.test.currentSuiteNum + "-" + self.step) === stepNum) {
self.emit('step.timeout');
if (utils.isFunction(self.options.onStepTimeout)) {
self.options.onStepTimeout.call(self, self.options.stepTimeout, stepNum);
}
}
clearInterval(stepTimeoutCheckInterval);
}
}, this.options.stepTimeout, this, new Date().getTime(), this.test.currentSuiteNum + "-" + this.step);
}
this.emit('step.start', step);
stepResult = step.call(this, this.currentResponse);
if (utils.isFunction(this.options.onStepComplete)) {
this.options.onStepComplete.call(this, this, stepResult);
}
if (!skipLog) {
this.emit('step.complete', stepResult);
this.log(stepInfo + f(": done in %dms.", new Date().getTime() - this.startTime), "info");
}
};
/**
* Sends keys to given element.
*
* @param String selector A DOM CSS3 compatible selector
* @param String keys A string representing the sequence of char codes to send
* @param Object options Options
* @return Casper
*/
Casper.prototype.sendKeys = function(selector, keys, options) {
"use strict";
this.checkStarted();
options = utils.mergeObjects({
eventType: 'keypress'
}, options || {});
var elemInfos = this.getElementInfo(selector),
tag = elemInfos.nodeName.toLowerCase(),
type = utils.getPropertyPath(elemInfos, 'attributes.type'),
supported = ["color", "date", "datetime", "datetime-local", "email",
"hidden", "month", "number", "password", "range", "search",
"tel", "text", "time", "url", "week"];
var isTextInput = false;
if (tag === 'textarea' || (tag === 'input' && supported.indexOf(type) !== -1)) {
// clicking on the input element brings it focus
isTextInput = true;
this.click(selector);
}
this.page.sendEvent(options.eventType, keys);
if (isTextInput) {
// remove the focus
this.evaluate(function(selector) {
__utils__.findOne(selector).blur();
}, selector);
}
return this;
};
/**
* Sets current WebPage instance the credentials for HTTP authentication.
*
* @param String username
* @param String password
* @return Casper
*/
Casper.prototype.setHttpAuth = function setHttpAuth(username, password) {
"use strict";
this.checkStarted();
this.page.settings.userName = username;
this.page.settings.password = password;
return this;
};
/**
* Configures and starts Casper.
*
* @param String location An optional location to open on start
* @param function then Next step function to execute on page loaded (optional)
* @return Casper
*/
Casper.prototype.start = function start(location, then) {
"use strict";
/*jshint maxstatements:30*/
this.emit('starting');
this.log('Starting...', "info");
this.startTime = new Date().getTime();
this.history = [];
this.popups = pagestack.create();
this.steps = [];
this.step = 0;
// Option checks
if (this.logLevels.indexOf(this.options.logLevel) < 0) {
this.log(f("Unknown log level '%d', defaulting to 'warning'", this.options.logLevel), "warning");
this.options.logLevel = "warning";
}
if (!utils.isWebPage(this.page)) {
this.page = this.mainPage = utils.isWebPage(this.options.page) ? this.options.page : createPage(this);
}
this.page.settings = utils.mergeObjects(this.page.settings, this.options.pageSettings);
if (utils.isClipRect(this.options.clipRect)) {
this.page.clipRect = this.options.clipRect;
}
if (utils.isObject(this.options.viewportSize)) {
this.page.viewportSize = this.options.viewportSize;
}
// timeout handling
if (utils.isNumber(this.options.timeout) && this.options.timeout > 0) {
this.log(f("Execution timeout set to %dms", this.options.timeout), "info");
setTimeout(function _check(self) {
self.emit('timeout');
if (utils.isFunction(self.options.onTimeout)) {
self.options.onTimeout.call(self, self.options.timeout);
}
}, this.options.timeout, this);
}
this.started = true;
this.emit('started');
if (utils.isString(location) && location.length > 0) {
return this.thenOpen(location, utils.isFunction(then) ? then : this.createStep(function _step() {
this.log("start page is loaded", "debug");
}, {skipLog: true}));
}
return this;
};
/**
* Returns the current status of current instance
*
* @param Boolean asString Export status object as string
* @return Object
*/
Casper.prototype.status = function status(asString) {
"use strict";
var properties = ['currentHTTPStatus', 'loadInProgress', 'navigationRequested',
'options', 'pendingWait', 'requestUrl', 'started', 'step', 'url'];
var currentStatus = {};
properties.forEach(function(property) {
currentStatus[property] = this[property];
}.bind(this));
return asString === true ? utils.dump(currentStatus) : currentStatus;
};
/**
* Schedules the next step in the navigation process.
*
* @param function step A function to be called as a step
* @return Casper
*/
Casper.prototype.then = function then(step) {
"use strict";
this.checkStarted();
if (!utils.isFunction(step)) {
throw new CasperError("You can only define a step as a function");
}
// check if casper is running
if (this.checker === null) {
// append step to the end of the queue
step.level = 0;
this.steps.push(step);
} else {
// insert substep a level deeper
try {
step.level = this.steps[this.step - 1].level + 1;
} catch (e) {
step.level = 0;
}
var insertIndex = this.step;
while (this.steps[insertIndex] && step.level === this.steps[insertIndex].level) {
insertIndex++;
}
this.steps.splice(insertIndex, 0, step);
}
this.emit('step.added', step);
return this;
};
/**
* Adds a new navigation step for clicking on a provided link selector
* and execute an optional next step.
*
* @param String selector A DOM CSS3 compatible selector
* @param Function then Next step function to execute on page loaded (optional)
* @return Casper
* @see Casper#click
* @see Casper#then
*/
Casper.prototype.thenClick = function thenClick(selector, then, fallbackToHref) {
"use strict";
this.checkStarted();
if (arguments.length > 2) {
this.emit("deprecated", "The thenClick() method does not process the fallbackToHref argument since 0.6");
}
this.then(function _step() {
this.click(selector);
});
return utils.isFunction(then) ? this.then(then) : this;
};
/**
* Adds a new navigation step to perform code evaluation within the
* current retrieved page DOM.
*
* @param function fn The function to be evaluated within current page DOM
* @param object context Optional function parameters context
* @return Casper
* @see Casper#evaluate
*/
Casper.prototype.thenEvaluate = function thenEvaluate(fn, context) {
"use strict";
this.checkStarted();
var args = [fn].concat([].slice.call(arguments, 1));
return this.then(function _step() {
this.evaluate.apply(this, args);
});
};
/**
* Adds a new navigation step for opening the provided location.
*
* @param String location The URL to load
* @param function then Next step function to execute on page loaded (optional)
* @return Casper
* @see Casper#open
*/
Casper.prototype.thenOpen = function thenOpen(location, settings, then) {
"use strict";
this.checkStarted();
if (!(settings && !utils.isFunction(settings))) {
then = settings;
settings = null;
}
this.then(this.createStep(function _step() {
this.open(location, settings);
}, {
skipLog: true
}));
return utils.isFunction(then) ? this.then(then) : this;
};
/**
* Adds a new navigation step for opening and evaluate an expression
* against the DOM retrieved from the provided location.
*
* @param String location The url to open
* @param function fn The function to be evaluated within current page DOM
* @param object context Optional function parameters context
* @return Casper
* @see Casper#evaluate
* @see Casper#open
*/
Casper.prototype.thenOpenAndEvaluate = function thenOpenAndEvaluate(location, fn, context) {
"use strict";
this.checkStarted();
return this.thenOpen(location).thenEvaluate(fn, context);
};
/**
* Returns a string representation of current instance
*
* @return String
*/
Casper.prototype.toString = function toString() {
"use strict";
return '[object Casper], currently at ' + this.getCurrentUrl();
};
/**
* Sets the user-agent string currently used when requesting urls.
*
* @param String userAgent User agent string
* @return String
*/
Casper.prototype.userAgent = function userAgent(agent) {
"use strict";
this.options.pageSettings.userAgent = agent;
if (this.started && this.page) {
this.page.settings.userAgent = agent;
}
return this;
};
/**
* Changes the current viewport size.
*
* @param Number width The viewport width, in pixels
* @param Number height The viewport height, in pixels
* @return Casper
*/
Casper.prototype.viewport = function viewport(width, height) {
"use strict";
this.checkStarted();
if (!utils.isNumber(width) || !utils.isNumber(height) || width <= 0 || height <= 0) {
throw new CasperError(f("Invalid viewport: %dx%d", width, height));
}
this.page.viewportSize = {
width: width,
height: height
};
this.emit('viewport.changed', [width, height]);
return this;
};
/**
* Checks if an element matching the provided DOM CSS3/XPath selector is visible
* current page DOM by checking that offsetWidth and offsetHeight are
* both non-zero.
*
* @param String selector A DOM CSS3/XPath selector
* @return Boolean
*/
Casper.prototype.visible = function visible(selector) {
"use strict";
this.checkStarted();
return this.evaluate(function _evaluate(selector) {
return __utils__.visible(selector);
}, selector);
};
/**
* Displays a warning message onto the console and logs the event.
*
* @param String message
* @return Casper
*/
Casper.prototype.warn = function warn(message) {
"use strict";
this.log(message, "warning", "phantom");
var formatted = f.apply(null, ["⚠  " + message].concat([].slice.call(arguments, 1)));
return this.echo(formatted, 'COMMENT');
};
/**
* Adds a new step that will wait for a given amount of time (expressed
* in milliseconds) before processing an optional next one.
*
* @param Number timeout The max amount of time to wait, in milliseconds
* @param Function then Next step to process (optional)
* @return Casper
*/
Casper.prototype.wait = function wait(timeout, then) {
"use strict";
this.checkStarted();
timeout = ~~timeout;
if (timeout < 1) {
this.die("wait() only accepts a positive integer > 0 as a timeout value");
}
if (then && !utils.isFunction(then)) {
this.die("wait() a step definition must be a function");
}
return this.then(function _step() {
this.waitStart();
setTimeout(function _check(self) {
self.log(f("wait() finished waiting for %dms.", timeout), "info");
if (then) {
then.call(self, self);
}
self.waitDone();
}, timeout, this);
});
};
Casper.prototype.waitStart = function waitStart() {
"use strict";
this.emit('wait.start');
this.pendingWait = true;
};
Casper.prototype.waitDone = function waitDone() {
"use strict";
this.emit('wait.done');
this.pendingWait = false;
};
/**
* Waits until a function returns true to process a next step.
*
* @param Function testFx A function to be evaluated for returning condition satisfecit
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitFor = function waitFor(testFx, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
if (!utils.isFunction(testFx)) {
this.die("waitFor() needs a test function");
}
if (then && !utils.isFunction(then)) {
this.die("waitFor() next step definition must be a function");
}
return this.then(function _step() {
this.waitStart();
var self = this;
var interval;
var start = new Date().getTime();
var condition = testFx.call(self, self);
function _waitFinished () {
self.log(f("waitFor() finished in %dms.", new Date().getTime() - start), "info");
if (then) {
then.call(self, self);
}
}
if (condition) {
self.waitDone();
_waitFinished();
return;
}
interval = setInterval(function _check(testFx, timeout, onTimeout) {
var timedOut = (new Date().getTime() - start > timeout);
if (!timedOut && !condition) {
condition = testFx.call(self, self);
if (!condition) {
return;
}
}
// Either we timed out or the condition is true
self.waitDone();
clearInterval(interval);
if (timedOut) {
self.log("Casper.waitFor() timeout", "warning");
self.emit('waitFor.timeout');
var onWaitTimeout = onTimeout ? onTimeout : self.options.onWaitTimeout;
if (!utils.isFunction(onWaitTimeout)) {
throw new CasperError('Invalid timeout function, exiting.');
}
onWaitTimeout.call(self, timeout);
} else {
_waitFinished();
}
}, 100, testFx, timeout, onTimeout);
});
};
/**
* Waits for a popup page having its url matching the provided pattern to be opened
* and loaded.
*
* @param String|RegExp urlPattern The popup url pattern
* @param Function then The next step function (optional)
* @param Function onTimeout Function to call on operation timeout (optional)
* @param Number timeout Timeout in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitForPopup = function waitForPopup(urlPattern, then, onTimeout, timeout) {
"use strict";
return this.waitFor(function() {
try {
this.popups.find(urlPattern);
return true;
} catch (e) {
return false;
}
}, then, onTimeout, timeout);
};
/**
* Waits until a given resource is loaded
*
* @param String/Function test A function to test if the resource exists.
* A string will be matched against the resources url.
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitForResource = function waitForResource(test, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
return this.waitFor(function _check() {
return this.resourceExists(test);
}, then, onTimeout, timeout);
};
/**
* Waits until an element matching the provided DOM CSS3/XPath selector exists in
* remote DOM to process a next step.
*
* @param String selector A DOM CSS3/XPath selector
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitForSelector = function waitForSelector(selector, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
return this.waitFor(function _check() {
return this.exists(selector);
}, then, onTimeout, timeout);
};
/**
* Waits until the page contains given HTML text or matches a given RegExp.
*
* @param String|RegExp pattern Text or RegExp to wait for
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitForText = function(pattern, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
return this.waitFor(function _check() {
var content = this.getPageContent();
if (utils.isRegExp(pattern)) {
return pattern.test(content);
}
return content.indexOf(pattern) !== -1;
}, then, onTimeout, timeout);
};
/**
* Waits until an element matching the provided DOM CSS3/XPath selector does not
* exist in the remote DOM to process a next step.
*
* @param String selector A DOM CSS3/XPath selector
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitWhileSelector = function waitWhileSelector(selector, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
return this.waitFor(function _check() {
return !this.exists(selector);
}, then, onTimeout, timeout);
};
/**
* Waits until an element matching the provided DOM CSS3/XPath selector is
* visible in the remote DOM to process a next step.
*
* @param String selector A DOM CSS3/XPath selector
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitUntilVisible = function waitUntilVisible(selector, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
return this.waitFor(function _check() {
return this.visible(selector);
}, then, onTimeout, timeout);
};
/**
* Waits until an element matching the provided DOM CSS3/XPath selector is no
* longer visible in remote DOM to process a next step.
*
* @param String selector A DOM CSS3/XPath selector
* @param Function then The next step to perform (optional)
* @param Function onTimeout A callback function to call on timeout (optional)
* @param Number timeout The max amount of time to wait, in milliseconds (optional)
* @return Casper
*/
Casper.prototype.waitWhileVisible = function waitWhileVisible(selector, then, onTimeout, timeout) {
"use strict";
this.checkStarted();
timeout = timeout ? timeout : this.options.waitTimeout;
return this.waitFor(function _check() {
return !this.visible(selector);
}, then, onTimeout, timeout);
};
/**
* Makes the provided frame page as the currently active one. Note that the
* active page will be reverted when finished.
*
* @param String|Number frameInfo Target frame name or number
* @param Function then Next step function
* @return Casper
*/
Casper.prototype.withFrame = function withFrame(frameInfo, then) {
"use strict";
this.then(function _step() {
if (utils.isNumber(frameInfo)) {
if (frameInfo > this.page.childFramesCount() - 1) {
throw new CasperError(f('Frame number "%d" is out of bounds.', frameInfo));
}
} else if (this.page.childFramesName().indexOf(frameInfo) === -1) {
throw new CasperError(f('No frame named "%s" was found.', frameInfo));
}
// make the frame page the currently active one
this.page.switchToChildFrame(frameInfo);
});
try {
this.then(then);
} catch (e) {
// revert to main page on error
this.warn("Error while processing frame step: " + e);
this.page.switchToMainFrame();
throw e;
}
return this.then(function _step() {
// revert to main page
this.page.switchToMainFrame();
});
};
/**
* Makes the provided frame page as the currently active one. Note that the
* active page will be reverted when finished.
*
* @param String|RegExp|WebPage popup Target frame page information
* @param Function then Next step function
* @return Casper
*/
Casper.prototype.withPopup = function withPopup(popupInfo, then) {
"use strict";
this.then(function _step() {
var popupPage = this.popups.find(popupInfo);
if (!utils.isFunction(then)) {
throw new CasperError("withPopup() requires a step function.");
}
// make the popup page the currently active one
this.page = popupPage;
});
try {
this.then(then);
} catch (e) {
// revert to main page on error
this.log("error while processing popup step: " + e, "error");
this.page = this.mainPage;
throw e;
}
return this.then(function _step() {
// revert to main page
this.page = this.mainPage;
});
};
/**
* Changes the current page zoom factor.
*
* @param Number factor The zoom factor
* @return Casper
*/
Casper.prototype.zoom = function zoom(factor) {
"use strict";
this.checkStarted();
if (!utils.isNumber(factor) || factor <= 0) {
throw new CasperError("Invalid zoom factor: " + factor);
}
this.page.zoomFactor = factor;
return this;
};
/**
* Extends Casper's prototype with provided one.
*
* @param Object proto Prototype methods to add to Casper
* @deprecated
* @since 0.6
*/
Casper.extend = function(proto) {
"use strict";
this.emit("deprecated", "Casper.extend() has been deprecated since 0.6; check the docs")
if (!utils.isObject(proto)) {
throw new CasperError("extends() only accept objects as prototypes");
}
utils.mergeObjects(Casper.prototype, proto);
};
exports.Casper = Casper;
/**
* Creates a new WebPage instance for Casper use.
*
* @param Casper casper A Casper instance
* @return WebPage
*/
function createPage(casper) {
/*jshint maxstatements:20*/
"use strict";
var page = require('webpage').create();
page.onAlert = function onAlert(message) {
casper.log('[alert] ' + message, "info", "remote");
casper.emit('remote.alert', message);
if (utils.isFunction(casper.options.onAlert)) {
casper.options.onAlert.call(casper, casper, message);
}
};
page.onConfirm = function onConfirm(message) {
if ('page.confirm' in casper._filters) {
return casper.filter('page.confirm', message);
}
return true;
};
page.onConsoleMessage = function onConsoleMessage(msg) {
// client utils casper console message
var consoleTest = /^\[casper\.echo\]\s?([\s\S]*)/.exec(msg);
if (consoleTest && consoleTest.length === 2) {
casper.echo(consoleTest[1]);
return; // don't trigger remote.message event for these
}
// client utils log messages
var logLevel = "info",
logTest = /^\[casper:(\w+)\]\s?([\s\S]*)/m.exec(msg);
if (logTest && logTest.length === 3) {
logLevel = logTest[1];
msg = logTest[2];
}
casper.log(msg, logLevel, "remote");
casper.emit('remote.message', msg);
};
page.onError = function onError(msg, trace) {
casper.emit('page.error', msg, trace);
};
page.onInitialized = function onInitialized() {
casper.emit('page.initialized', page);
if (utils.isFunction(casper.options.onPageInitialized)) {
casper.log("Post-configuring WebPage instance", "debug");
casper.options.onPageInitialized.call(casper, page);
}
};
page.onLoadStarted = function onLoadStarted() {
casper.loadInProgress = true;
casper.emit('load.started');
};
page.onLoadFinished = function onLoadFinished(status) {
/*jshint maxstatements:20*/
if (status !== "success") {
casper.emit('load.failed', {
status: status,
http_status: casper.currentHTTPStatus,
url: casper.requestUrl
});
var message = 'Loading resource failed with status=' + status;
if (casper.currentHTTPStatus) {
message += f(' (HTTP %d)', casper.currentHTTPStatus);
}
message += ': ' + casper.requestUrl;
casper.log(message, "warning");
casper.navigationRequested = false;
if (utils.isFunction(casper.options.onLoadError)) {
casper.options.onLoadError.call(casper, casper, casper.requestUrl, status);
}
}
// local client scripts
casper.injectClientScripts();
// remote client scripts
casper.includeRemoteScripts();
// Client-side utils injection
casper.injectClientUtils();
// history
casper.history.push(casper.getCurrentUrl());
casper.emit('load.finished', status);
casper.loadInProgress = false;
};
page.onNavigationRequested = function onNavigationRequested(url, navigationType, navigationLocked, isMainFrame) {
casper.log(f('Navigation requested: url=%s, type=%s, lock=%s, isMainFrame=%s',
url, navigationType, navigationLocked, isMainFrame), "debug");
if(isMainFrame) {
casper.navigationRequested = true;
}
casper.emit('navigation.requested', url, navigationType, navigationLocked, isMainFrame);
};
page.onPageCreated = function onPageCreated(popupPage) {
casper.emit('popup.created', popupPage);
popupPage.onLoadFinished = function onLoadFinished() {
casper.popups.push(popupPage);
casper.emit('popup.loaded', popupPage);
};
popupPage.onClosing = function onClosing(closedPopup) {
casper.popups.clean(closedPopup);
casper.emit('popup.closed', closedPopup);
};
};
page.onPrompt = function onPrompt(message, value) {
return casper.filter('page.prompt', message, value);
};
page.onResourceReceived = function onResourceReceived(resource) {
http.augmentResponse(resource);
casper.emit('resource.received', resource);
if (utils.isFunction(casper.options.onResourceReceived)) {
casper.options.onResourceReceived.call(casper, casper, resource);
}
casper.handleReceivedResource(resource);
};
page.onResourceRequested = function onResourceRequested(request) {
casper.emit('resource.requested', request);
if (request.url === casper.requestUrl) {
casper.emit('page.resource.requested', request);
}
if (utils.isFunction(casper.options.onResourceRequested)) {
casper.options.onResourceRequested.call(casper, casper, request);
}
};
page.onUrlChanged = function onUrlChanged(url) {
casper.log(f('url changed to "%s"', url), "debug");
casper.navigationRequested = false;
casper.emit('url.changed', url);
};
casper.emit('page.created', page);
return page;
}