author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 00:04:54 +0300 | |
changeset 15 | 73c48011b8c7 |
parent 6 | 1c3b8676e58c |
permissions | -rw-r--r-- |
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/*! |
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\file suggests.js This module contains the Suggests class. |
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*/ |
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/*! |
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Class to handle displaying URL suggestions from history and bookmarks. |
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*/ |
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function Suggests() |
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{ |
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// "Private" member variables |
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var suggestsXOffset = 20; |
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var inputTimeoutId = null; |
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var inputTimeoutDelay = _getTimeoutDelaySetting(); |
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var maxHeight = 0; // maximum height of suggest list |
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var urlSearchHeight = 0; |
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var urlSnippetId; |
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var urlHasFoucus = false; // URL edit field focus flag |
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// Orbit UI has a different URL snippet. |
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if (app.layoutType() == "tenone") { |
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urlSnippetId = "TitleUrlId"; |
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} |
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else { |
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urlSnippetId = "UrlSearchChromeId"; |
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} |
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// "Private" methods |
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//! Calculates the maximum height for the suggest list. |
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//! If not all suggest items can fit in list, only half an item should be |
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//! visible the end when scrolled to the top. This is to indicate more items. |
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function _setMaxHeight() |
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{ |
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// Calculate height of available space for suggest list. |
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var statusbarSz = snippets.StatusBarChromeId.getGeometry(); |
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// The Orbit UI doesn't have a status bar. |
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var statusbarHeight = (app.ui() == "orbit_ui") ? 0 : statusbarSz.height; |
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var urlSearchSz = snippets[urlSnippetId].getGeometry(); |
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var toolbarSz = snippets.WebViewToolbarId.getGeometry(); |
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// leave some space between suggest and toolbar (~10% of display height) |
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var bufferHeight = Math.ceil(chrome.displaySize.height / 10); |
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var availableHeight = chrome.displaySize.height - |
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(statusbarHeight + urlSearchSz.height + toolbarSz.height + bufferHeight); |
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// Calculate number of elements that can fit in available space. |
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var elementHeight = 70; // set in suggests.css |
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var numElements = Math.floor(availableHeight / elementHeight); |
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// in order to make room for 1/2 entry at end of list we may |
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// need to sacrifice 1 full element. |
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if ((availableHeight % elementHeight) < (elementHeight / 2)) { |
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numElements -= 1; |
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} |
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numElements += 0.5; // half of final visible entry |
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// max suggest list height in pixels |
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maxHeight = Math.floor(numElements * elementHeight); |
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} |
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//! Temporary substitute for settings function to get the delay for |
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//! displaying the URL suggests list. |
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function _getTimeoutDelaySetting() |
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{ |
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// no setting stored for this currently |
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return (1000); // 1 second |
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} |
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//! Displays and updates suggest list. |
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function _showSuggests() |
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{ |
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// make sure the input is the latest |
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var input = snippets[urlSnippetId].url; |
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// only display suggestions if there is input |
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if (input.length != 0) { |
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_updateSuggestList(input); |
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this.updateSuggestsSize(); |
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if (!snippets.SuggestsChromeId.visible && pageController.editMode) { |
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window.scrollTo(0, 0); |
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// Disable the content view, leave the URL serach bar and status bar enabled. |
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views.WebView.enabled = false; |
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views.WebView.freeze(); |
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snippets.SuggestsChromeId.show(false); |
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} |
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} else { |
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// no user input so hide suggestions |
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_hideSuggests(); |
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} |
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} |
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//! Updates the suggestion list based on the specified input. |
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/*! |
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\param input the current URL box text |
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*/ |
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function _updateSuggestList(input) |
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{ |
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var recenturl; |
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var recenttitle = window.localeDelegate.translateText( |
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"txt_browser_chrome_suggests_search_for"); |
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99 |
var snippetId = document.getElementById('SuggestsId'); |
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var suggests = window.bookmarksController.suggestSimilar(input); |
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var suggestUL = document.createElement('ul'); |
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var suggestLI = document.createElement('li'); |
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var pattern = new RegExp(input, "ig"); |
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104 |
|
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snippetId.innerHTML = ""; // clear previous results |
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suggestUL.id = 'suggestUlId'; |
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suggestLI.id = "searchLiId"; |
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108 |
|
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// always provide an option to search for user entry |
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recenttitle = recenttitle.replace(/%1/, "<b>" + input + "</b>"); |
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111 |
|
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suggestLI.innerHTML = '<a href="#" onclick="searchSuggests.searchUrlValue(\''+input+'\');'+ |
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'return false;">'+ |
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'<div class="SuggestElement">'+'<span class="aTitle">'+recenttitle+'</span>'+'</div></a>'; |
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suggestUL.appendChild(suggestLI); |
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116 |
|
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// add each search suggestion to unordered list |
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for (i=0; i < suggests.length; i++) { |
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recenturl = suggests[i].url1; |
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recenttitle = suggests[i].title1; |
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suggestLI = document.createElement('li'); |
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suggestLI.id = "suggestsLiId"; |
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123 |
|
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// bold search text |
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recenttitle = recenttitle.replace(pattern, "<b>$&</b>"); |
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recenturl = recenturl.replace(pattern, "<b>$&</b>"); |
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127 |
|
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suggestLI.innerHTML = '<a href="#" onclick="searchSuggests.gotoUrl(\''+suggests[i].url1+'\');' + |
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' return false;">'+ |
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'<div class="SuggestElement">'+ |
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'<span class="aTitle">'+recenttitle+'</span><br/>'+ |
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'<span class="aUrl">'+recenturl+'</span></div></a>'; |
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suggestUL.appendChild(suggestLI); |
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} |
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135 |
|
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snippetId.appendChild(suggestUL); |
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} |
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138 |
|
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//! Hides suggests list and support items. |
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function _hideSuggests() |
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141 |
{ |
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clearTimeout(inputTimeoutId); |
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window.snippets.SuggestsChromeId.hide(false); |
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views.WebView.enabled = true; |
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views.WebView.unfreeze(); |
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} |
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147 |
|
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// Public Functions |
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149 |
|
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//! Handler for onload javascript event. |
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this.loadComplete = function() |
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152 |
{ |
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var urlSearchSz = snippets[urlSnippetId].getGeometry(); |
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154 |
|
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urlSearchHeight = urlSearchSz.height; |
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snippets.SuggestsChromeId.anchorTo(urlSnippetId, suggestsXOffset, urlSearchHeight); |
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snippets.SuggestsChromeId.zValue = 10; |
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158 |
|
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_setMaxHeight(); // calculate max suggest list height |
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160 |
|
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// hide suggests on external mouse events |
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snippets.SuggestsChromeId.externalMouseEvent.connect(this.handleExternalMouseEvent); |
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// need to resize suggest page snippet on geometry change |
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chrome.prepareForGeometryChange.connect(createDelegate(this, this.handleGeometryChange)); |
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} |
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166 |
|
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//! Updates the size of the suggests window depending on the size of the |
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//! main DIV -- which changes as the number of items changes. |
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this.updateSuggestsSize = function() |
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170 |
{ |
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if (snippets.SuggestsChromeId != undefined) { |
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var totalW = chrome.displaySize.width; |
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var divHeight = document.getElementById("SuggestsId").clientHeight + 2; |
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var displayHeight = Math.min(maxHeight, divHeight); |
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var displayWidth = totalW - (2 * suggestsXOffset); |
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176 |
|
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// reset snippet height |
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snippets.SuggestsChromeId.setSize(displayWidth, displayHeight); |
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} |
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} |
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181 |
|
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//! Handles the geometry change signal. Need to re-calculate max height |
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//! and then update suggest page height. |
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this.handleGeometryChange = function() |
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185 |
{ |
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_setMaxHeight(); // max height is based on display height |
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this.updateSuggestsSize(); |
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} |
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189 |
|
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//! Loads google search page for search string. |
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191 |
/*! |
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\param input value to search for |
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*/ |
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this.searchUrlValue = function(input) |
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{ |
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var searchurl = window.pageController.searchUrl(input); |
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_hideSuggests(); |
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window.pageController.currentLoad(searchurl); |
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window.pageController.urlTextChanged(searchurl); |
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} |
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//! Hides suggests list and loads specified page. |
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/*! |
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\param url address of page to load |
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*/ |
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this.gotoUrl = function(url) |
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{ |
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_hideSuggests(); |
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url = window.pageController.guessUrlFromString(url); |
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window.pageController.currentLoad(url); |
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window.pageController.urlTextChanged(url); |
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} |
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|
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//! Handles external mouse events - dismisses suggests list. |
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/*! |
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\param type the type of event |
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\param name the name of event |
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\param description event description |
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*/ |
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this.handleExternalMouseEvent = function(type, name, description) |
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{ |
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// external mouse event received on VKB mouse clicks and |
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// suggest list mouse clicks both of which should be ignored |
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if ((name == "MouseClick") && !urlHasFoucus |
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&& !snippets.SuggestsChromeId.hasFocus) { |
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_hideSuggests(); |
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} |
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} |
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|
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//! Updates the user input for suggestion list. |
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/*! |
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\param input the current user input |
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*/ |
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this.updateUserInput = function() |
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{ |
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// user still editing URL - don't show/update suggests yet |
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clearTimeout(inputTimeoutId); |
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inputTimeoutId = setTimeout(_showSuggests.bind(this), inputTimeoutDelay); |
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} |
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|
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//! Called when load state changes. Suggests should only be called when |
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//! the load state is editing. |
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this.updateLoadState = function() |
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{ |
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if (!pageController.editMode) { |
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// not in editing mode - suggests not allowed |
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_hideSuggests(); // ensure suggests are hidden |
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} |
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} |
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|
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//! Called when URL search bar focus changes. The external mouse event |
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//! handler deals with most cases where the suggestion list should be |
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//! dismissed but we don't get those events when the list isn't visible |
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//! so this handler is needed to cancel the timer in those cases. |
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this.urlSearchFocusChanged = function(focusIn) |
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{ |
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urlHasFoucus = focusIn; |
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// if visible user may be scrolling suggestion page so ignore focus change |
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if (!focusIn && !snippets.SuggestsChromeId.visible) { |
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// prevent suggestion list from being displayed until URL edited again |
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clearTimeout(inputTimeoutId); |
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} |
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} |
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|
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//! Sets the user input URL suggest delay. |
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/*! |
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\param to the new delay time. |
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*/ |
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this.setSuggestTimeout = function(to) |
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{ |
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inputTimeoutDelay = to; |
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} |
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} |
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276 |