alternate ntp: implement searchbox api for instant overlay to adopt themes

chrome/renderer/searchbox/searchbox_extension.cc

 // Copyright (c) 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.
 
 #include "chrome/renderer/searchbox/searchbox_extension.h"
 
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/renderer/searchbox/searchbox.h"
 #include "content/public/renderer/render_view.h"
@@ skipping 118 matching lines @@
 
 static const char kDispatchContextChangeEventScript[] =
     "if (window.chrome &&"
     "    window.chrome.searchBox &&"
     "    window.chrome.searchBox.oncontextchange &&"
     "    typeof window.chrome.searchBox.oncontextchange == 'function') {"
     "  window.chrome.searchBox.oncontextchange();"
     "  true;"
     "}";
 
+static const char kDispatchThemeChangeEventScript[] =
+    "if (window.chrome &&"
+    "    window.chrome.searchBox &&"
+    "    window.chrome.searchBox.onthemechange &&"
+    "    typeof window.chrome.searchBox.onthemechange == 'function') {"
+    "  window.chrome.searchBox.onthemechange();"
+    "  true;"
+    "}";
+
+static const char kDispatchThemeAreaHeightChangeEventScript[] =
+    "if (window.chrome &&"
+    "    window.chrome.searchBox &&"
+    "    window.chrome.searchBox.onthemeareaheightchange &&"
+    "    typeof window.chrome.searchBox.onthemeareaheightchange =="
+    "        'function') {"
+    "  window.chrome.searchBox.onthemeareaheightchange();"
+    "  true;"
+    "}";
+
 // ----------------------------------------------------------------------------
 
 class SearchBoxExtensionWrapper : public v8::Extension {
  public:
   explicit SearchBoxExtensionWrapper(const base::StringPiece& code);
 
   // Allows v8's javascript code to call the native functions defined
   // in this class for window.chrome.
   virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
       v8::Handle<v8::String> name);
@@ skipping 32 matching lines @@
   // Gets the autocomplete results from search box.
   static v8::Handle<v8::Value> GetAutocompleteResults(
       const v8::Arguments& args);
 
   // Gets whether the search box is focused.
   static v8::Handle<v8::Value> GetIsFocused(const v8::Arguments& args);
 
   // Gets the current session context.
   static v8::Handle<v8::Value> GetContext(const v8::Arguments& args);
 
+  // Gets the background info of the theme currently adopted by browser.
+  // Call only when overlay is showing NTP page.
+  static v8::Handle<v8::Value> GetThemeBackgroundInfo(
+      const v8::Arguments& args);
+
+  // Gets the theme area height that the entire theme background image should
+  // fill up.
+  // Call only when overlay is showing NTP page and GetThemeBackgroundInfo
+  // returns a non-empty image_url and an image_vertical_alignment that is not
+  // "top".
+  static v8::Handle<v8::Value> GetThemeAreaHeight(const v8::Arguments& args);
+
   // Navigates the window to a URL represented by either a URL string or a
   // restricted ID.
   static v8::Handle<v8::Value> NavigateContentWindow(const v8::Arguments& args);
 
   // Sets ordered suggestions. Valid for current |value|.
   static v8::Handle<v8::Value> SetSuggestions(const v8::Arguments& args);
 
   // Sets the text to be autocompleted into the search box.
   static v8::Handle<v8::Value> SetQuerySuggestion(const v8::Arguments& args);
 
@@ skipping 37 matching lines @@
   if (name->Equals(v8::String::New("GetWidth")))
     return v8::FunctionTemplate::New(GetWidth);
   if (name->Equals(v8::String::New("GetHeight")))
     return v8::FunctionTemplate::New(GetHeight);
   if (name->Equals(v8::String::New("GetAutocompleteResults")))
     return v8::FunctionTemplate::New(GetAutocompleteResults);
   if (name->Equals(v8::String::New("GetIsFocused")))
     return v8::FunctionTemplate::New(GetIsFocused);
   if (name->Equals(v8::String::New("GetContext")))
     return v8::FunctionTemplate::New(GetContext);
+  if (name->Equals(v8::String::New("GetThemeBackgroundInfo")))
+    return v8::FunctionTemplate::New(GetThemeBackgroundInfo);
+  if (name->Equals(v8::String::New("GetThemeAreaHeight")))
+    return v8::FunctionTemplate::New(GetThemeAreaHeight);
   if (name->Equals(v8::String::New("NavigateContentWindow")))
     return v8::FunctionTemplate::New(NavigateContentWindow);
   if (name->Equals(v8::String::New("SetSuggestions")))
     return v8::FunctionTemplate::New(SetSuggestions);
   if (name->Equals(v8::String::New("SetQuerySuggestion")))
     return v8::FunctionTemplate::New(SetQuerySuggestion);
   if (name->Equals(v8::String::New("SetQuerySuggestionFromAutocompleteResult")))
     return v8::FunctionTemplate::New(SetQuerySuggestionFromAutocompleteResult);
   if (name->Equals(v8::String::New("SetQuery")))
     return v8::FunctionTemplate::New(SetQuery);
@@ skipping 134 matching lines @@
   content::RenderView* render_view = GetRenderView();
   if (!render_view) return v8::Undefined();
 
   v8::Handle<v8::Object> context = v8::Object::New();
   context->Set(
       v8::String::New("isNewTabPage"),
       v8::Boolean::New(SearchBox::Get(render_view)->active_tab_is_ntp()));
   return context;
 }
 
+v8::Handle<v8::Value> SearchBoxExtensionWrapper::GetThemeBackgroundInfo(
+    const v8::Arguments& args) {
+  content::RenderView* render_view = GetRenderView();
+  if (!render_view) return v8::Undefined();
+
+  const ThemeBackgroundInfo& theme_info =
+      SearchBox::Get(render_view)->GetThemeBackgroundInfo();
+  v8::Handle<v8::Object> info = v8::Object::New();
+  info->Set(v8::String::New("colorRgba"),
+            UTF16ToV8String(theme_info.color_rgba));
+  info->Set(v8::String::New("imageUrl"),
+            UTF16ToV8String(theme_info.image_url));
+  info->Set(v8::String::New("imageHorizontalAlignment"),
+            UTF16ToV8String(theme_info.image_horizontal_alignment));
+  info->Set(v8::String::New("imageVerticalAlignment"),
+            UTF16ToV8String(theme_info.image_vertical_alignment));
+  info->Set(v8::String::New("imageTiling"),
+            UTF16ToV8String(theme_info.image_tiling));
+  info->Set(v8::String::New("imageHeight"),
+            v8::Int32::New(theme_info.image_height));
+  return info;
+}
+
+
+v8::Handle<v8::Value> SearchBoxExtensionWrapper::GetThemeAreaHeight(
+    const v8::Arguments& args) {
+  content::RenderView* render_view = GetRenderView();
+  if (!render_view) return v8::Undefined();
+
+  return v8::Int32::New(SearchBox::Get(render_view)->GetThemeAreaHeight());
+}
+
 // static
 v8::Handle<v8::Value> SearchBoxExtensionWrapper::NavigateContentWindow(
     const v8::Arguments& args) {
   content::RenderView* render_view = GetRenderView();
   if (!render_view || !args.Length()) return v8::Undefined();
 
   GURL destination_url;
   if (args[0]->IsNumber()) {
     const InstantAutocompleteResult* result = SearchBox::Get(render_view)->
         GetAutocompleteResultWithId(args[0]->Uint32Value());
@@ skipping 224 matching lines @@
 void SearchBoxExtension::DispatchBlur(WebKit::WebFrame* frame) {
   Dispatch(frame, kDispatchBlurEventScript);
 }
 
 // static
 void SearchBoxExtension::DispatchContextChange(WebKit::WebFrame* frame) {
   Dispatch(frame, kDispatchContextChangeEventScript);
 }
 
 // static
+void SearchBoxExtension::DispatchThemeChange(WebKit::WebFrame* frame) {
+  Dispatch(frame, kDispatchThemeChangeEventScript);
+}
+
+// static
+void SearchBoxExtension::DispatchThemeAreaHeightChange(
+    WebKit::WebFrame* frame) {
+  Dispatch(frame, kDispatchThemeAreaHeightChangeEventScript);
+}
+
+// static
 v8::Extension* SearchBoxExtension::Get() {
   return new SearchBoxExtensionWrapper(ResourceBundle::GetSharedInstance().
       GetRawDataResource(IDR_SEARCHBOX_API));
 }
 
 }  // namespace extensions_v8