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Create copy_and_paste.js (with code from ui.js). 

(imported from commit 37a06af5489e7da5196e5710f384d1f5a7ee7578)
This commit is contained in:
Steve Howell 2014-03-13 17:07:56 -04:00 committed by Leo Franchi
parent fa440d0be2
commit 16faed0a83
4 changed files with 144 additions and 134 deletions
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142
static/js/copy_and_paste.js Normal file
View File

@ -0,0 +1,142 @@
var copy_and_paste = (function () {
var exports = {}; // we don't actually export anything yet, but that's ok
function find_boundary_tr(initial_tr, iterate_row) {
var j, skip_same_td_check = false;
var tr = initial_tr;
// If the selection boundary is somewhere that does not have a
// parent tr, we should let the browser handle the copy-paste
// entirely on its own
if (tr.length === 0) {
return undefined;
}
// If the selection boundary is on a table row that does not have an
// associated message id (because the user clicked between messages),
// then scan downwards until we hit a table row with a message id.
// To ensure we can't enter an infinite loop, bail out (and let the
// browser handle the copy-paste on its own) if we don't hit what we
// are looking for within 10 rows.
for (j = 0; (!tr.is('.message_row')) && j < 10; j++) {
tr = iterate_row(tr);
}
if (j === 10) {
return undefined;
} else if (j !== 0) {
// If we updated tr, then we are not dealing with a selection
// that is entirely within one td, and we can skip the same td
// check (In fact, we need to because it won't work correctly
// in this case)
skip_same_td_check = true;
}
return [rows.id(tr), skip_same_td_check];
}
function copy_handler(e) {
var selection = window.getSelection();
var i, range, ranges = [], startc, endc, initial_end_tr, start_id, end_id, row, message;
var start_data, end_data;
var skip_same_td_check = false;
var div = $('<div>'), content;
for (i = 0; i < selection.rangeCount; i++) {
range = selection.getRangeAt(i);
ranges.push(range);
startc = $(range.startContainer);
start_data = find_boundary_tr($(startc.parents('.selectable_row, .message_header')[0]), function (row) {
return row.next();
});
if (start_data === undefined) {
return;
}
start_id = start_data[0];
endc = $(range.endContainer);
// If the selection ends in the bottom whitespace, we should act as
// though the selection ends on the final message
// Chrome seems to like selecting the compose_close button
// when you go off the end of the last message
if (endc.attr('id') === "bottom_whitespace" || endc.attr('id') === "compose_close") {
initial_end_tr = $(".message_row:last");
skip_same_td_check = true;
} else {
initial_end_tr = $(endc.parents('.selectable_row')[0]);
}
end_data = find_boundary_tr(initial_end_tr, function (row) {
return row.prev();
});
if (end_data === undefined) {
return;
}
end_id = end_data[0];
if (start_data[1] || end_data[1]) {
skip_same_td_check = true;
}
// we should let the browser handle the copy-paste entirely on its own
// (In this case, there is no need for our special copy code)
if (!skip_same_td_check &&
startc.parents('.selectable_row>div')[0] === endc.parents('.selectable_row>div')[0]) {
return;
}
else {
// Construct a div for what we want to copy (div)
for (row = current_msg_list.get_row(start_id);
rows.id(row) <= end_id;
row = rows.next_visible(row))
{
if (row.prev().hasClass("message_header")) {
content = $('<div>').text(row.prev().text()
.replace(/\s+/g, " ")
.replace(/^\s/, "").replace(/\s$/, ""));
div.append($('<p>').append($('<strong>').text(content.text())));
}
message = current_msg_list.get(rows.id(row));
var message_firstp = $(message.content).slice(0, 1);
message_firstp.prepend(message.sender_full_name + ": ");
div.append(message_firstp);
div.append($(message.content).slice(1));
}
}
}
if (window.bridge !== undefined) {
// If the user is running the desktop app,
// convert emoji images to plain text for
// copy-paste purposes.
ui.replace_emoji_with_text(div);
}
// Select div so that the browser will copy it
// instead of copying the original selection
div.css({position: 'absolute', 'left': '-99999px'})
.attr('id', 'copytempdiv');
$('body').append(div);
selection.selectAllChildren(div[0]);
// After the copy has happened, delete the div and
// change the selection back to the original selection
window.setTimeout(function () {
selection = window.getSelection();
selection.removeAllRanges();
_.each(ranges, function (range) {
selection.addRange(range);
});
$('#copytempdiv').remove();
},0);
}
$(function () {
$(document).bind('copy', copy_handler);
});
return exports;
}());

134
static/js/ui.js
View File

@ -79,146 +79,12 @@ exports.page_down_the_right_amount = function () {
viewport.scrollTop(viewport.scrollTop() + delta);
};
function find_boundary_tr(initial_tr, iterate_row) {
var j, skip_same_td_check = false;
var tr = initial_tr;
// If the selection boundary is somewhere that does not have a
// parent tr, we should let the browser handle the copy-paste
// entirely on its own
if (tr.length === 0) {
return undefined;
}
// If the selection bounary is on a table row that does not have an
// associated message id (because the user clicked between messages),
// then scan downwards until we hit a table row with a message id.
// To ensure we can't enter an infinite loop, bail out (and let the
// browser handle the copy-paste on its own) if we don't hit what we
// are looking for within 10 rows.
for (j = 0; (!tr.is('.message_row')) && j < 10; j++) {
tr = iterate_row(tr);
}
if (j === 10) {
return undefined;
} else if (j !== 0) {
// If we updated tr, then we are not dealing with a selection
// that is entirely within one td, and we can skip the same td
// check (In fact, we need to because it won't work correctly
// in this case)
skip_same_td_check = true;
}
return [rows.id(tr), skip_same_td_check];
}
exports.replace_emoji_with_text = function (element) {
element.find(".emoji").replaceWith(function () {
return $(this).attr("alt");
});
};
function copy_handler(e) {
var selection = window.getSelection();
var i, range, ranges = [], startc, endc, initial_end_tr, start_id, end_id, row, message;
var start_data, end_data;
var skip_same_td_check = false;
var div = $('<div>'), content;
for (i = 0; i < selection.rangeCount; i++) {
range = selection.getRangeAt(i);
ranges.push(range);
startc = $(range.startContainer);
start_data = find_boundary_tr($(startc.parents('.selectable_row, .message_header')[0]), function (row) {
return row.next();
});
if (start_data === undefined) {
return;
}
start_id = start_data[0];
endc = $(range.endContainer);
// If the selection ends in the bottom whitespace, we should act as
// though the selection ends on the final message
// Chrome seems to like selecting the compose_close button
// when you go off the end of the last message
if (endc.attr('id') === "bottom_whitespace" || endc.attr('id') === "compose_close") {
initial_end_tr = $(".message_row:last");
skip_same_td_check = true;
} else {
initial_end_tr = $(endc.parents('.selectable_row')[0]);
}
end_data = find_boundary_tr(initial_end_tr, function (row) {
return row.prev();
});
if (end_data === undefined) {
return;
}
end_id = end_data[0];
if (start_data[1] || end_data[1]) {
skip_same_td_check = true;
}
// we should let the browser handle the copy-paste entirely on its own
// (In this case, there is no need for our special copy code)
if (!skip_same_td_check &&
startc.parents('.selectable_row>div')[0] === endc.parents('.selectable_row>div')[0]) {
return;
}
else {
// Construct a div for what we want to copy (div)
for (row = current_msg_list.get_row(start_id);
rows.id(row) <= end_id;
row = rows.next_visible(row))
{
if (row.prev().hasClass("message_header")) {
content = $('<div>').text(row.prev().text()
.replace(/\s+/g, " ")
.replace(/^\s/, "").replace(/\s$/, ""));
div.append($('<p>').append($('<strong>').text(content.text())));
}
message = current_msg_list.get(rows.id(row));
var message_firstp = $(message.content).slice(0, 1);
message_firstp.prepend(message.sender_full_name + ": ");
div.append(message_firstp);
div.append($(message.content).slice(1));
}
}
}
if (window.bridge !== undefined) {
// If the user is running the desktop app,
// convert emoji images to plain text for
// copy-paste purposes.
exports.replace_emoji_with_text(div);
}
// Select div so that the browser will copy it
// instead of copying the original selection
div.css({position: 'absolute', 'left': '-99999px'})
.attr('id', 'copytempdiv');
$('body').append(div);
selection.selectAllChildren(div[0]);
// After the copy has happened, delete the div and
// change the selection back to the original selection
window.setTimeout(function () {
selection = window.getSelection();
selection.removeAllRanges();
_.each(ranges, function (range) {
selection.addRange(range);
});
$('#copytempdiv').remove();
},0);
}
$(function () {
$(document).bind('copy', copy_handler);
});
/* We use 'visibility' rather than 'display' and jQuery's show() / hide(),
because we want to reserve space for the email address. This avoids
things jumping around slightly when the email address is shown. */

1
tools/jslint/check-all.js
View File

@ -29,6 +29,7 @@ var globals =
+ ' avatar feature_flags search_suggestion referral stream_color Dict'
+ ' Filter summary admin stream_data muting WinChan muting_ui Socket channel gear_menu'
+ ' message_flags bot_data loading favicon resize scroll_bar condense floating_recipient_bar'
+ ' copy_and_paste'
// colorspace.js
+ ' colorspace'

1
zproject/settings.py
View File

@ -548,6 +548,7 @@ JS_SPECS = {
'js/ui.js',
'js/scroll_bar.js',
'js/gear_menu.js',
'js/copy_and_paste.js',
'js/popovers.js',
'js/typeahead_helper.js',
'js/search_suggestion.js',