Bug 730445 - Add UI to specify a default search engine. r=mfinkle

mobile/android/chrome/content/aboutAddons.js

@@ -41,6 +41,7 @@ var ContextMenus = {
       document.getElementById("contextmenu-enable").setAttribute("hidden", "true");
       document.getElementById("contextmenu-disable").setAttribute("hidden", "true");
       document.getElementById("contextmenu-uninstall").setAttribute("hidden", "true");
+      document.getElementById("contextmenu-default").setAttribute("hidden", "true");
       return;
     }
 
@@ -58,6 +59,12 @@ var ContextMenus = {
       document.getElementById("contextmenu-enable").removeAttribute("hidden");
       document.getElementById("contextmenu-disable").setAttribute("hidden", "true");
     }
+
+    if (addon.type == "search") {
+      document.getElementById("contextmenu-default").removeAttribute("hidden");
+    } else {
+      document.getElementById("contextmenu-default").setAttribute("hidden", "true");
+    }
   },
 
   enable: function(event) {
@@ -74,6 +81,11 @@ var ContextMenus = {
     Addons.uninstall(this.target.addon);
     this.target = null;
   },
+
+  setDefaultSearch: function(event) {
+    Addons.setDefaultSearch(this.target.addon);
+    this.target = null;
+  }
 }
 
 function init() {
@@ -316,6 +328,18 @@ var Addons = {
     else
       uninstallBtn.removeAttribute("disabled");
 
+    let defaultButton = document.getElementById("default-btn");
+    if (addon.type == "search") {
+      if (addon.id == Services.search.defaultEngine.name)
+        defaultButton.setAttribute("disabled", "true");
+      else
+        defaultButton.removeAttribute("disabled");
+
+      defaultButton.removeAttribute("hidden");
+    } else {
+      defaultButton.setAttribute("hidden", "true");
+    }
+
     let box = document.querySelector("#addons-details > .addon-item .options-box");
     box.innerHTML = "";
 
@@ -479,6 +503,20 @@ var Addons = {
     listItem.setAttribute("opType", opType);
   },
 
+  setDefaultSearch: function setDefaultSearch(aAddon) {
+    let addon = aAddon || document.querySelector("#addons-details > .addon-item").addon;
+    if (addon.type != "search")
+      return;
+
+    let engine = Services.search.getEngineByName(addon.id);
+
+    // Move the new default search engine to the top of the search engine list.
+    Services.search.moveEngine(engine, 0);
+    Services.search.defaultEngine = engine;
+
+    document.getElementById("default-btn").setAttribute("disabled", "true");
+  },
+
   showRestart: function showRestart() {
     this._restartCount++;
     gChromeWin.XPInstallObserver.showRestartPrompt();

mobile/android/chrome/content/aboutAddons.xhtml

@@ -57,6 +57,7 @@
     <menuitem id="contextmenu-enable" label="&addonAction.enable;" onclick="ContextMenus.enable();"></menuitem>
     <menuitem id="contextmenu-disable" label="&addonAction.disable;" onclick="ContextMenus.disable();"></menuitem>
     <menuitem id="contextmenu-uninstall" label="&addonAction.uninstall;" onclick="ContextMenus.uninstall();"></menuitem>
+    <menuitem id="contextmenu-default" label="&addonAction.setDefault;" onclick="ContextMenus.setDefaultSearch();"></menuitem>
   </menu>
 
   <div id="addons-header" class="header">
@@ -83,6 +84,7 @@
         <button id="disable-btn" class="show-on-enable hide-on-disable hide-on-uninstall" onclick="Addons.disable();">&addonAction.disable;</button>
         <button id="uninstall-btn" class="hide-on-uninstall" onclick="Addons.uninstall();">&addonAction.uninstall;</button>
         <button id="cancel-btn" class="show-on-uninstall" onclick="Addons.cancelUninstall();">&addonAction.undo;</button>
+        <button id="default-btn" class="show-on-enable hide-on-disable hide-on-uninstall" onclick="Addons.setDefaultSearch();">&addonAction.setDefault;</button>
       </div>
       <div class="options-header">&aboutAddons.options;</div>
       <div class="options-box"></div>

mobile/android/locales/en-US/chrome/aboutAddons.dtd

@@ -10,3 +10,4 @@
 <!ENTITY addonAction.disable                    "Disable">
 <!ENTITY addonAction.uninstall                  "Uninstall">
 <!ENTITY addonAction.undo                       "Undo">
+<!ENTITY addonAction.setDefault                 "Set as Default">

mobile/android/themes/core/aboutBase.css

@@ -113,6 +113,10 @@ body[dir="ltr"] .icon {
   color: #b5b5b5;
 }
 
+.buttons > button[hidden="true"] {
+  display: none;
+}
+
 .buttons:first-child {
   -moz-border-start-color: transparent;
 }