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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
cr.define('options', function() {
const OptionsPage = options.OptionsPage;
/**
* Encapsulated handling of the search page.
* @constructor
*/
function SearchPage() {
OptionsPage.call(this, 'search', templateData.searchPage, 'searchPage');
this.searchActive = false;
}
cr.addSingletonGetter(SearchPage);
SearchPage.prototype = {
// Inherit SearchPage from OptionsPage.
__proto__: OptionsPage.prototype,
/**
* Initialize the page.
*/
initializePage: function() {
// Call base class implementation to start preference initialization.
OptionsPage.prototype.initializePage.call(this);
var self = this;
// Create a search field element.
var searchField = document.createElement('input');
searchField.id = 'searchField';
searchField.type = 'search';
searchField.setAttribute('autosave', 'org.chromium.options.search');
searchField.setAttribute('results', '10');
searchField.setAttribute('incremental', 'true');
// Replace the contents of the navigation tab with the search field.
self.tab.textContent = '';
self.tab.appendChild(searchField);
// Handle search events. (No need to throttle, WebKit's search field
// will do that automatically.)
searchField.onsearch = function(e) {
self.setSearchText_(this.value);
};
},
/**
* Called after this page has shown.
*/
didShowPage: function() {
// This method is called by the Options page after all pages have
// had their visibilty attribute set. At this point we can perform the
// search specific DOM manipulation.
this.setSearchActive_(true);
},
/**
* Called before this page will be hidden.
*/
willHidePage: function() {
// This method is called by the Options page before all pages have
// their visibilty attribute set. Before that happens, we need to
// undo the search specific DOM manipulation that was performed in
// didShowPage.
this.setSearchActive_(false);
},
/**
* Update the UI to reflect whether we are in a search state.
* @param {boolean} active True if we are on the search page.
* @private
*/
setSearchActive_: function(active) {
// It's fine to exit if search wasn't active and we're not going to
// activate it now.
if (!this.searchActive_ && !active)
return;
if (this.searchActive_ != active) {
this.searchActive_ = active;
if (active) {
// Reset the search criteria, effectively hiding all the sections.
this.setSearchText_('');
} else {
// Just wipe out any active search text since it's no longer relevant.
$('searchField').value = '';
}
}
var page, length, childDiv;
for (var name in OptionsPage.registeredPages) {
if (name == this.name)
continue;
// Update the visible state of all top-level elements that are not
// sections (ie titles, button strips). We do this before changing
// the page visibility to avoid excessive re-draw.
page = OptionsPage.registeredPages[name];
length = page.pageDiv.childNodes.length;
for (var i = 0; i < length; i++) {
childDiv = page.pageDiv.childNodes[i];
if (childDiv.nodeType == 1) {
if (active) {
if (childDiv.nodeName.toLowerCase() != 'section')
childDiv.classList.add('search-hidden');
} else {
childDiv.classList.remove('search-hidden');
}
}
}
// Toggle the visibility state of the page.
if (active) {
// When search is active, remove the 'hidden' tag. This tag may have
// been added by the OptionsPage.
page.pageDiv.classList.remove('hidden');
} else {
page.visible = false;
}
}
},
/**
* Set the current search criteria.
* @param {string} text Search text.
* @private
*/
setSearchText_: function(text) {
var searchText = text.toLowerCase();
var foundMatches = false;
// Build a list of pages to search. Omit the search page.
var pagesToSearch = [];
for (var name in OptionsPage.registeredPages) {
if (name != this.name)
pagesToSearch.push(OptionsPage.registeredPages[name]);
}
// Hide all sections. If the search string matches a title page, show
// all sections of that page.
for (var key in pagesToSearch) {
var page = pagesToSearch[key];
var pageTitle = page.title.toLowerCase();
// Hide non-sections in each page.
for (var i = 0; i < page.pageDiv.childNodes.length; i++) {
var childDiv = page.pageDiv.childNodes[i];
if (childDiv.nodeType == 1 &&
childDiv.nodeName.toLowerCase() == 'section') {
if (pageTitle == searchText) {
childDiv.classList.remove('search-hidden');
foundMatches = true;
} else {
childDiv.classList.add('search-hidden');
}
}
}
}
// Now search all sections for anchored string matches.
if (!foundMatches && searchText.length) {
var searchRegEx = new RegExp('\\b' + searchText, 'i');
for (var key in pagesToSearch) {
var page = pagesToSearch[key];
for (var i = 0; i < page.pageDiv.childNodes.length; i++) {
var childDiv = page.pageDiv.childNodes[i];
if (childDiv.nodeType == 1 &&
childDiv.nodeName.toLowerCase() == 'section') {
var isMatch = false;
var sectionElements = childDiv.getElementsByTagName("*");
var length = sectionElements.length;
var element;
for (var j = 0; j < length; j++) {
element = sectionElements[j];
if (searchRegEx.test(element.textContent)) {
isMatch = true;
break;
}
}
if (isMatch) {
childDiv.classList.remove('search-hidden');
foundMatches = true;
}
}
}
}
}
// Configure elements on the search results page based on search results.
if (searchText.length == 0) {
$('searchPageInfo').classList.remove('search-hidden');
$('searchPageNoMatches').classList.add('search-hidden');
} else if (foundMatches) {
$('searchPageInfo').classList.add('search-hidden');
$('searchPageNoMatches').classList.add('search-hidden');
} else {
$('searchPageInfo').classList.add('search-hidden');
$('searchPageNoMatches').classList.remove('search-hidden');
}
}
};
// Export
return {
SearchPage: SearchPage
};
});
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