Bug 828254 - Add context menu item to query default search provider using selection. r=mleibovic

mobile/android/chrome/content/SelectionHandler.js

@@ -396,6 +396,15 @@ var SelectionHandler = {
     this._closeSelection();
   },
 
+  searchSelection: function sh_searchSelection() {
+    let selectedText = this._getSelectedText();
+    if (selectedText.length) {
+      let req = Services.search.defaultEngine.getSubmission(selectedText);
+      BrowserApp.selectOrOpenTab(req.uri.spec);
+    }
+    this._closeSelection();
+  },
+
   /*
    * Called if for any reason we fail during the selection
    * process. Cancels the selection.

mobile/android/chrome/content/browser.js

@@ -2065,6 +2065,8 @@ var NativeWindow = {
       this.menuitems = [];
       let menuitemsSet = false;
 
+      Services.obs.notifyObservers(null, "before-build-contextmenu", "");
+
       // now walk up the tree and for each node look for any context menu items that apply
       let element = target;
       this._nativeItemsSeparator = 0;
@@ -5962,6 +5964,9 @@ var IndexedDB = {
 };
 
 var ClipboardHelper = {
+  // Recorded so search with option can be removed/replaced when default engine changed.
+  _searchMenuItem: -1,
+
   init: function() {
     NativeWindow.contextmenus.add(Strings.browser.GetStringFromName("contextmenu.copy"), ClipboardHelper.getCopyContext(false), ClipboardHelper.copy.bind(ClipboardHelper));
     NativeWindow.contextmenus.add(Strings.browser.GetStringFromName("contextmenu.copyAll"), ClipboardHelper.getCopyContext(true), ClipboardHelper.copy.bind(ClipboardHelper));
@@ -5970,6 +5975,26 @@ var ClipboardHelper = {
     NativeWindow.contextmenus.add(Strings.browser.GetStringFromName("contextmenu.share"), ClipboardHelper.shareContext, ClipboardHelper.share.bind(ClipboardHelper));
     NativeWindow.contextmenus.add(Strings.browser.GetStringFromName("contextmenu.paste"), ClipboardHelper.pasteContext, ClipboardHelper.paste.bind(ClipboardHelper));
     NativeWindow.contextmenus.add(Strings.browser.GetStringFromName("contextmenu.changeInputMethod"), NativeWindow.contextmenus.textContext, ClipboardHelper.inputMethod.bind(ClipboardHelper));
+
+    // We add this contextmenu item right before the menu is built to avoid having to initialise the search service early.
+    Services.obs.addObserver(this, "before-build-contextmenu", false);
+  },
+
+  uninit: function ch_uninit() {
+    Services.obs.removeObserver(this, "before-build-contextmenu");
+  },
+
+  observe: function observe(aSubject, aTopic) {
+    if (aTopic == "ContextMenu:Open") {
+      this._setSearchMenuItem();
+    }
+  },
+
+  _setSearchMenuItem: function setSearchMenuItem() {
+    if (this._searchMenuItem) {
+      NativeWindow.contextmenus.remove(this._searchMenuItem);
+    }
+    this._searchMenuItem = NativeWindow.contextmenus.add(Strings.browser.formatStringFromName("contextmenu.search", [Services.search.defaultEngine.name], 1), ClipboardHelper.searchWithContext, ClipboardHelper.searchWith.bind(ClipboardHelper));
   },
 
   get clipboardHelper() {
@@ -6006,6 +6031,10 @@ var ClipboardHelper = {
     SelectionHandler.selectAll(aElement, aX, aY);
   },
 
+  searchWith: function(aElement) {
+    SelectionHandler.searchSelection(aElement);
+  },
+
   share: function() {
     SelectionHandler.shareSelection();
   },
@@ -6075,6 +6104,12 @@ var ClipboardHelper = {
     }
   },
 
+  searchWithContext: {
+    matches: function searchWithContextMatches(aElement, aX, aY) {
+      return SelectionHandler.shouldShowContextMenu(aX, aY);
+    }
+  },
+
   pasteContext: {
     matches: function(aElement) {
       if (NativeWindow.contextmenus.textContext.matches(aElement)) {

mobile/android/locales/en-US/chrome/browser.properties

@@ -165,6 +165,7 @@ contextmenu.changeInputMethod=Select Input Method
 contextmenu.fullScreen=Full Screen
 contextmenu.copyImageLocation=Copy Image Location
 contextmenu.shareImage=Share Image
+contextmenu.search=%S Search
 contextmenu.saveImage=Save Image
 contextmenu.setWallpaper=Set as Wallpaper
 contextmenu.addSearchEngine=Add Search Engine