Implement window.chrome.app.isInstalled .

BUG=49225
TEST=ExtensionBrowserTest.PropertyAppIsInstalled

Review URL: http://codereview.chromium.org/3169045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57674 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 89 insertions, 0 deletions

diff --git a/chrome/renderer/extensions/chrome_app_bindings.cc b/chrome/renderer/extensions/chrome_app_bindings.cc
new file mode 100644
index 0000000..37558dc
--- /dev/null
+++ b/chrome/renderer/extensions/chrome_app_bindings.cc
@@ -0,0 +1,61 @@
+// Copyright (c) 2010 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/extensions/chrome_app_bindings.h"
+
+#include "chrome/renderer/render_thread.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebFrame.h"
+#include "v8/include/v8.h"
+
+using WebKit::WebFrame;
+
+namespace extensions_v8 {
+
+static const char* const kAppExtensionName = "v8/ChromeApp";
+
+class ChromeAppExtensionWrapper : public v8::Extension {
+ public:
+  ChromeAppExtensionWrapper() :
+    v8::Extension(kAppExtensionName,
+      "var chrome;"
+      "if (!chrome)"
+      "  chrome = {};"
+      "if (!chrome.app) {"
+      "  chrome.app = new function() {"
+      "    native function GetIsInstalled();"
+      "    this.__defineGetter__('isInstalled', GetIsInstalled);"
+      "  };"
+      "}") {}
+
+  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
+      v8::Handle<v8::String> name) {
+    if (name->Equals(v8::String::New("GetIsInstalled"))) {
+      return v8::FunctionTemplate::New(GetIsInstalled);
+    }
+    return v8::Handle<v8::FunctionTemplate>();
+  }
+
+  static v8::Handle<v8::Value> GetIsInstalled(const v8::Arguments& args) {
+    WebFrame* frame = WebFrame::frameForCurrentContext();
+    if (!frame)
+      return v8::Boolean::New(false);
+
+    GURL url(frame->url());
+    if (url.is_empty() ||
+        !url.is_valid() ||
+        !(url.SchemeIs("http") || url.SchemeIs("https")))
+      return v8::Boolean::New(false);
+
+    bool has_web_extent =
+        !RenderThread::current()->GetExtensionIdByURL(url).empty();
+
+    return v8::Boolean::New(has_web_extent);
+  }
+};
+
+v8::Extension* ChromeAppExtension::Get() {
+  return new ChromeAppExtensionWrapper();
+}
+
+}  // namespace extensions_v8
diff --git a/chrome/renderer/extensions/chrome_app_bindings.h b/chrome/renderer/extensions/chrome_app_bindings.h
new file mode 100644
index 0000000..1292eb2
--- /dev/null
+++ b/chrome/renderer/extensions/chrome_app_bindings.h
@@ -0,0 +1,28 @@
+// Copyright (c) 2010 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.
+
+// The AppObjectExtension is a v8 extension that creates an object
+// at window.chrome.app.  This object allows javascript to get details
+// on the app state of the page.
+// The read-only property app.isInstalled is true if the current page is
+// within the extent of an installed, enabled app.
+
+#ifndef CHROME_RENDERER_EXTENSIONS_CHROME_APP_BINDINGS_H_
+#define CHROME_RENDERER_EXTENSIONS_CHROME_APP_BINDINGS_H_
+#pragma once
+
+namespace v8 {
+class Extension;
+}
+
+namespace extensions_v8 {
+
+class ChromeAppExtension {
+ public:
+  static v8::Extension* Get();
+};
+
+}  // namespace extensions_v8
+
+#endif  // CHROME_RENDERER_EXTENSIONS_CHROME_APP_BINDINGS_H_