Instant: Use only one hidden WebContents per profile.

chrome/renderer/resources/extensions/searchbox_api.js

 // Copyright 2012 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.
 
 var chrome;
+
 if (!chrome)
   chrome = {};
 
-if (!chrome.embeddedSearch) {
-  chrome.embeddedSearch = new function() {
+if (!chrome.searchBox) {
+  chrome.searchBox = new function() {
+    native function GetQuery();
+    native function GetVerbatim();
+    native function GetSelectionStart();
+    native function GetSelectionEnd();
+    native function GetX();
+    native function GetY();
+    native function GetWidth();
+    native function GetHeight();
+    native function SetSuggestion();
 
-    // =========================================================================
-    //                            Private functions
-    // =========================================================================
-    native function GetFont();
-    native function NavigateContentWindow();
+    this.__defineGetter__('value', GetQuery);
+    this.__defineGetter__('verbatim', GetVerbatim);
+    this.__defineGetter__('selectionStart', GetSelectionStart);
+    this.__defineGetter__('selectionEnd', GetSelectionEnd);
+    this.__defineGetter__('x', GetX);
+    this.__defineGetter__('y', GetY);
+    this.__defineGetter__('width', GetWidth);
+    this.__defineGetter__('height', GetHeight);
 
-    function escapeHTML(text) {
-      return text.replace(/[<>&"']/g, function(match) {
-        switch (match) {
-          case '<': return '&lt;';
-          case '>': return '&gt;';
-          case '&': return '&amp;';
-          case '"': return '&quot;';
-          case "'": return '&apos;';
-        }
-      });
-    }
-
-    var safeObjects = {};
-
-    // Returns the |restrictedText| wrapped in a ShadowDOM.
-    function SafeWrap(restrictedText, width, height, opt_fontSize,
-        opt_direction) {
-      var node = document.createElement('div');
-      var nodeShadow = safeObjects.createShadowRoot.apply(node);
-      nodeShadow.applyAuthorStyles = true;
-      nodeShadow.innerHTML =
-          '<div style="' +
-              'width: ' + width + 'px !important;' +
-              'height: ' + height + 'px !important;' +
-              'font-family: \'' + GetFont() + '\', \'Arial\' !important;' +
-              (opt_fontSize ?
-                  'font-size: ' + opt_fontSize + 'px !important;' : '') +
-              'overflow: hidden !important;' +
-              'text-overflow: ellipsis !important;' +
-              'white-space: nowrap !important"' +
-              (opt_direction ? ' dir="' + opt_direction + '"' : '') +
-              '>' +
-            restrictedText +
-          '</div>';
-      safeObjects.defineProperty(node, 'webkitShadowRoot', { value: null });
-      return node;
-    }
-
-    chrome.embeddedSearchOnWindowReady = function() {
-      // |embeddedSearchOnWindowReady| is used for initializing window context
-      // and should be called only once per context.
-      safeObjects.createShadowRoot = Element.prototype.webkitCreateShadowRoot;
-      safeObjects.defineProperty = Object.defineProperty;
-      delete window.chrome.embeddedSearchOnWindowReady;
+    this.setSuggestions = function(obj) {
+      SetSuggestion(obj);
     };
 
-    // =========================================================================
-    //                           Exported functions
-    // =========================================================================
-    this.navigateContentWindow = function(destination, disposition) {
-      return NavigateContentWindow(destination, disposition);
-    };
-
-    this.searchBox = new function() {
-
-      // =======================================================================
-      //                                  Constants
-      // =======================================================================
-      var MAX_CLIENT_SUGGESTIONS_TO_DEDUPE = 6;
-      var MAX_ALLOWED_DEDUPE_ATTEMPTS = 5;
-
-      var HTTP_REGEX = /^https?:\/\//;
-
-      var WWW_REGEX = /^www\./;
-
-      // =======================================================================
-      //                            Private functions
-      // =======================================================================
-      native function GetQuery();
-      native function GetVerbatim();
-      native function GetSelectionStart();
-      native function GetSelectionEnd();
-      native function GetStartMargin();
-      native function GetRightToLeft();
-      native function GetAutocompleteResults();
-      native function GetDisplayInstantResults();
-      native function GetFontSize();
-      native function IsKeyCaptureEnabled();
-      native function SetSuggestions();
-      native function SetQuerySuggestion();
-      native function SetQuerySuggestionFromAutocompleteResult();
-      native function SetQuery();
-      native function SetQueryFromAutocompleteResult();
-      native function ShowOverlay();
-      native function FocusOmnibox();
-      native function StartCapturingKeyStrokes();
-      native function StopCapturingKeyStrokes();
-
-      function SafeWrapSuggestion(restrictedText) {
-        return SafeWrap(restrictedText, window.innerWidth - 155, 22);
-      }
-
-      // Wraps the AutocompleteResult query and URL into ShadowDOM nodes so that
-      // the JS cannot access them and deletes the raw values.
-      function GetAutocompleteResultsWrapper() {
-        var autocompleteResults = DedupeAutocompleteResults(
-            GetAutocompleteResults());
-        var userInput = GetQuery();
-        for (var i = 0, result; result = autocompleteResults[i]; ++i) {
-          var title = escapeHTML(result.contents);
-          var url = escapeHTML(CleanUrl(result.destination_url, userInput));
-          var combinedHtml = '<span class=chrome_url>' + url + '</span>';
-          // TODO(dcblack): Rename these titleElement, urlElement, and
-          // combinedElement for optimal correctness.
-          if (title) {
-            result.titleNode = SafeWrapSuggestion(title);
-            combinedHtml += '<span class=chrome_separator> &ndash; </span>' +
-                '<span class=chrome_title>' + title + '</span>';
-          }
-          result.urlNode = SafeWrapSuggestion(url);
-          result.combinedNode = SafeWrapSuggestion(combinedHtml);
-          delete result.contents;
-          delete result.destination_url;
-        }
-        return autocompleteResults;
-      }
-
-      // TODO(dcblack): Do this in C++ instead of JS.
-      function CleanUrl(url, userInput) {
-        if (url.indexOf(userInput) == 0) {
-          return url;
-        }
-        url = url.replace(HTTP_REGEX, '');
-        if (url.indexOf(userInput) == 0) {
-          return url;
-        }
-        return url.replace(WWW_REGEX, '');
-      }
-
-      // TODO(dcblack): Do this in C++ instead of JS.
-      function CanonicalizeUrl(url) {
-        return url.replace(HTTP_REGEX, '').replace(WWW_REGEX, '');
-      }
-
-      // Removes duplicates from AutocompleteResults.
-      // TODO(dcblack): Do this in C++ instead of JS.
-      function DedupeAutocompleteResults(autocompleteResults) {
-        var urlToResultMap = {};
-        for (var i = 0, result; result = autocompleteResults[i]; ++i) {
-          var url = CanonicalizeUrl(result.destination_url);
-          if (url in urlToResultMap) {
-            var oldRelevance = urlToResultMap[url].rankingData.relevance;
-            var newRelevance = result.rankingData.relevance;
-            if (newRelevance > oldRelevance) {
-              urlToResultMap[url] = result;
-            }
-          } else {
-            urlToResultMap[url] = result;
-          }
-        }
-        var dedupedResults = [];
-        for (url in urlToResultMap) {
-          dedupedResults.push(urlToResultMap[url]);
-        }
-        return dedupedResults;
-      }
-
-      var lastPrefixQueriedForDuplicates = '';
-      var numDedupeAttempts = 0;
-
-      function DedupeClientSuggestions(clientSuggestions) {
-        var userInput = GetQuery();
-        if (userInput == lastPrefixQueriedForDuplicates) {
-          numDedupeAttempts += 1;
-          if (numDedupeAttempts > MAX_ALLOWED_DEDUPE_ATTEMPTS) {
-            // Request blocked for privacy reasons.
-            // TODO(dcblack): This check is insufficient.  We should have a
-            // check such that it's only callable once per onnativesuggestions,
-            // not once per prefix.  Also, there is a timing problem where if
-            // the user types quickly then the client will (correctly) attempt
-            // to render stale results, and end up calling dedupe multiple times
-            // when getValue shows the same prefix.  A better solution would be
-            // to have the client send up rid ranges to dedupe against and have
-            // the binary keep around all the old suggestions ever given to this
-            // overlay.  I suspect such an approach would clean up this code
-            // quite a bit.
-            return false;
-          }
-        } else {
-          lastPrefixQueriedForDuplicates = userInput;
-          numDedupeAttempts = 1;
-        }
-
-        var autocompleteResults = DedupeAutocompleteResults(
-            GetAutocompleteResults());
-        var nativeUrls = {};
-        for (var i = 0, result; result = autocompleteResults[i]; ++i) {
-          var nativeUrl = CanonicalizeUrl(result.destination_url);
-          nativeUrls[nativeUrl] = result.rid;
-        }
-        for (var i = 0; clientSuggestions[i] &&
-             i < MAX_CLIENT_SUGGESTIONS_TO_DEDUPE; ++i) {
-          var result = clientSuggestions[i];
-          if (result.url) {
-            var clientUrl = CanonicalizeUrl(result.url);
-            if (clientUrl in nativeUrls) {
-              result.duplicateOf = nativeUrls[clientUrl];
-            }
-          }
-        }
-        return true;
-      }
-
-      // =======================================================================
-      //                           Exported functions
-      // =======================================================================
-      this.__defineGetter__('value', GetQuery);
-      this.__defineGetter__('verbatim', GetVerbatim);
-      this.__defineGetter__('selectionStart', GetSelectionStart);
-      this.__defineGetter__('selectionEnd', GetSelectionEnd);
-      this.__defineGetter__('startMargin', GetStartMargin);
-      this.__defineGetter__('rtl', GetRightToLeft);
-      this.__defineGetter__('nativeSuggestions', GetAutocompleteResultsWrapper);
-      this.__defineGetter__('isKeyCaptureEnabled', IsKeyCaptureEnabled);
-      this.__defineGetter__('displayInstantResults', GetDisplayInstantResults);
-      this.__defineGetter__('font', GetFont);
-      this.__defineGetter__('fontSize', GetFontSize);
-
-      this.setSuggestions = function(text) {
-        SetSuggestions(text);
-      };
-      this.setAutocompleteText = function(text, behavior) {
-        SetQuerySuggestion(text, behavior);
-      };
-      this.setRestrictedAutocompleteText = function(resultId) {
-        SetQuerySuggestionFromAutocompleteResult(resultId);
-      };
-      this.setValue = function(text, type) {
-        SetQuery(text, type);
-      };
-      this.setRestrictedValue = function(resultId) {
-        SetQueryFromAutocompleteResult(resultId);
-      };
-      // TODO(jered): Remove the deprecated "reason" argument.
-      this.showOverlay = function(reason, height) {
-        ShowOverlay(reason, height);
-      };
-      // TODO(jered): Remove this when GWS knows about showOverlay().
-      this.show = this.showOverlay;
-      this.markDuplicateSuggestions = function(clientSuggestions) {
-        return DedupeClientSuggestions(clientSuggestions);
-      };
-      this.focus = function() {
-        FocusOmnibox();
-      };
-      this.startCapturingKeyStrokes = function() {
-        StartCapturingKeyStrokes();
-      };
-      this.stopCapturingKeyStrokes = function() {
-        StopCapturingKeyStrokes();
-      };
-      this.onchange = null;
-      this.onsubmit = null;
-      this.oncancel = null;
-      this.onresize = null;
-      this.onkeypress = null;
-      this.onkeycapturechange = null;
-      this.oncontextchange = null;
-      this.onmarginchange = null;
-      this.onnativesuggestions = null;
-
-      // DEPRECATED. These methods are from the legacy searchbox API.
-      // TODO(jered): Delete these.
-      native function GetX();
-      native function GetY();
-      native function GetWidth();
-      native function GetHeight();
-      this.__defineGetter__('x', GetX);
-      this.__defineGetter__('y', GetY);
-      this.__defineGetter__('width', GetWidth);
-      this.__defineGetter__('height', GetHeight);
-    };
-
-    this.newTabPage = new function() {
-
-      // =======================================================================
-      //                            Private functions
-      // =======================================================================
-      native function GetMostVisitedItems();
-      native function GetThemeBackgroundInfo();
-      native function DeleteMostVisitedItem();
-      native function UndoAllMostVisitedDeletions();
-      native function UndoMostVisitedDeletion();
-
-      function SafeWrapMostVisited(restrictedText, width, opt_direction) {
-        return SafeWrap(restrictedText, width, 18, 11, opt_direction);
-      }
-
-      function GetMostVisitedItemsWrapper() {
-        var mostVisitedItems = GetMostVisitedItems();
-        for (var i = 0, item; item = mostVisitedItems[i]; ++i) {
-          var title = escapeHTML(item.title);
-          var domain = escapeHTML(item.domain);
-          item.titleElement = SafeWrapMostVisited(title, 140, item.direction);
-          item.domainElement = SafeWrapMostVisited(domain, 123);
-          delete item.title;
-          delete item.domain;
-          delete item.direction;
-        }
-        return mostVisitedItems;
-      }
-
-      // =======================================================================
-      //                           Exported functions
-      // =======================================================================
-      this.__defineGetter__('mostVisited', GetMostVisitedItemsWrapper);
-      this.__defineGetter__('themeBackgroundInfo', GetThemeBackgroundInfo);
-
-      this.deleteMostVisitedItem = function(restrictId) {
-        DeleteMostVisitedItem(restrictId);
-      };
-      this.undoAllMostVisitedDeletions = function() {
-        UndoAllMostVisitedDeletions();
-      };
-      this.undoMostVisitedDeletion = function(restrictId) {
-        UndoMostVisitedDeletion(restrictId);
-      };
-
-      this.onmostvisitedchange = null;
-      this.onthemechange = null;
-    };
-
-    // Export legacy searchbox API.
-    // TODO: Remove this when Instant Extended is fully launched.
-    chrome.searchBox = this.searchBox;
+    this.onchange = null;
+    this.onsubmit = null;
+    this.oncancel = null;
+    this.onresize = null;
   };
 }