mirror of https://github.com/zulip/zulip.git
148 lines
4.4 KiB
JavaScript
148 lines
4.4 KiB
JavaScript
var search = (function () {
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var exports = {};
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var cached_term = "";
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var cached_matches = [];
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var cached_index;
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var cached_table = $('table.focused_table');
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function match_on_visible_text(row, search_term) {
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// You can't select on :visible, since that includes hidden elements that
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// take up space.
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return row.find(".message_content, .sender_name, .message_header, .message_time")
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.text().toLowerCase().indexOf(search_term) !== -1;
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}
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function disable_search_arrows_if(condition, affected_arrows) {
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var i, button;
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for (i = 0; i < affected_arrows.length; i++) {
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button = $("#search_" + affected_arrows[i]);
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if (condition) {
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button.attr("disabled", "disabled");
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} else {
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button.removeAttr("disabled");
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}
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}
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}
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function search(term, highlighted_message, reverse) {
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// term: case-insensitive text to search for
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// highlighted_message: the current location of the pointer. Ignored
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// on cached queries
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// reverse: boolean as to whether the search is forward or backwards
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//
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// returns a message object containing the search term.
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var previous_header_matched = false;
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var focused_table = $('table.focused_table');
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if ((term !== cached_term) || (cached_table[0] !== focused_table[0])) {
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cached_term = term;
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cached_matches = [];
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cached_index = null;
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cached_table = focused_table;
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var selected_zid = rows.id(highlighted_message);
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focused_table.find('.message_row, .recipient_row').each(function (index, row) {
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row = $(row);
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if (previous_header_matched || (match_on_visible_text(row, term))) {
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previous_header_matched = false;
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if (row.hasClass("recipient_row")) {
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previous_header_matched = true;
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} else {
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cached_matches.push(row);
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var zid = rows.id(row);
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if ((reverse && (zid <= selected_zid)) ||
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(!reverse && (zid >= selected_zid) && !cached_index)) {
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// Keep track of the closest match going up or down.
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cached_index = cached_matches.length - 1;
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}
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}
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}
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});
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disable_search_arrows_if(cached_matches.length === 0, ["up", "down"]);
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return cached_matches[cached_index];
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}
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if (reverse) {
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if (cached_index > 0) {
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cached_index--;
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}
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} else {
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if (cached_index < cached_matches.length - 1) {
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cached_index++;
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}
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}
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disable_search_arrows_if(cached_matches.length === 0, ["up", "down"]);
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disable_search_arrows_if(cached_index === 0, ["up"]);
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disable_search_arrows_if(cached_index === cached_matches.length - 1, ["down"]);
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return cached_matches[cached_index];
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}
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function highlight_match(row, search_term) {
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$('table tr').removeHighlight();
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row.highlight(search_term);
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row = row.prev('.recipient_row');
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if ((row.length !== 0) && (match_on_visible_text(row, search_term))) {
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row.highlight(search_term);
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}
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}
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exports.search_button_handler = function (reverse) {
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var query = $('#search').val().toLowerCase();
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var res = search(query, selected_message, reverse);
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if (!res) {
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return;
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}
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select_message(res);
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highlight_match(res, query);
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scroll_to_selected();
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};
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function clear_search_cache() {
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cached_term = "";
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}
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exports.focus_search = function () {
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$("#search").width("504px");
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$("#search_arrows").addClass("input-append");
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$('.search_button').show();
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disable_search_arrows_if(false, ["up", "down"]);
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};
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exports.initiate_search = function () {
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$('#search').val('').focus();
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};
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exports.clear_search = function () {
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$('table tr').removeHighlight();
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// Reset the width to that in the stylesheet. If you change it there, change
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// it here.
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$('#search').val('').width("610px");
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$("#search_arrows").removeClass("input-append");
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$("#search_up, #search_down").removeAttr("disabled");
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$('.search_button').blur().hide();
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clear_search_cache();
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};
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exports.something_is_highlighted = function () {
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return $(".highlight").length > 0;
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};
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exports.update_highlight_on_narrow = function () {
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highlight_match(selected_message, cached_term);
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clear_search_cache();
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};
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return exports;
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}());
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