[Android WebView] Convert context menu callback to long press

android_webview/native/aw_web_contents_view_delegate.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 "android_webview/native/aw_web_contents_view_delegate.h"
+
+#include "android_webview/native/aw_contents.h"
+#include "content/public/browser/android/content_view_core.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/context_menu_params.h"
+
+namespace android_webview {
+
+// static
+content::WebContentsViewDelegate* AwWebContentsViewDelegate::Create(
+    content::WebContents* web_contents) {
+  return new AwWebContentsViewDelegate(web_contents);
+}
+
+AwWebContentsViewDelegate::AwWebContentsViewDelegate(
+    content::WebContents* web_contents)
+    : web_contents_(web_contents) {
+  // Cannot instantiate web_contents_view_delegate_ here because
+  // AwContents::SetWebDelegate is not called yet.
+}
+
+AwWebContentsViewDelegate::~AwWebContentsViewDelegate() {}
+
+content::WebDragDestDelegate* AwWebContentsViewDelegate::GetDragDestDelegate() {
+  // GetDragDestDelegate is a pure virtual method from WebContentsViewDelegate
+  // and must have an implementation although android doesn't use it.
+  NOTREACHED();
+  return NULL;
+}
+
+void AwWebContentsViewDelegate::ShowContextMenu(
+    const content::ContextMenuParams& params,
+    content::ContextMenuSourceType type) {
+  // TODO(boliu): Large blocks of this function are identical with
+  // ChromeWebContentsViewDelegateAndroid::ShowContextMenu. De-dup this if
+  // possible.
+
+  // Display paste pop-up only when selection is empty and editable.
+  if (params.is_editable && params.selection_text.empty()) {
+    content::ContentViewCore* content_view_core =
+        web_contents_->GetContentNativeView();
+    if (content_view_core) {
+      content_view_core->ShowPastePopup(params.selection_start.x(),
+                                        params.selection_start.y());
+      return;
+    }
+  }
+
+  AwContents* aw_contents = AwContents::FromWebContents(web_contents_);
+  if (!aw_contents)
+    return;
+
+  // Context menu callback in Chromium is triggered by WebKit on an
+  // unhandled GestureLongPress event. Convert the context menu callback
+  // back into a long click event for Android WebView since the view
+  // system may choose to handle the gesture.
+  aw_contents->PerformLongClick();
+}
+
+}  // namespace android_webview