Assorted cleanup.

process: grep for TODO(port), find cruft, clean it up

Review URL: http://codereview.chromium.org/427004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@32844 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 187 insertions, 0 deletions

diff --git a/chrome/browser/tab_contents/web_drop_target_win.cc b/chrome/browser/tab_contents/web_drop_target_win.cc
new file mode 100644
index 0000000..ed2c7c6
--- /dev/null
+++ b/chrome/browser/tab_contents/web_drop_target_win.cc
@@ -0,0 +1,187 @@
+// Copyright (c) 2009 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 <windows.h>
+#include <shlobj.h>
+
+#include "chrome/browser/tab_contents/web_drop_target_win.h"
+
+#include "app/clipboard/clipboard_util_win.h"
+#include "app/os_exchange_data.h"
+#include "app/os_exchange_data_provider_win.h"
+#include "base/gfx/point.h"
+#include "chrome/browser/renderer_host/render_view_host.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/net_util.h"
+#include "webkit/glue/webdropdata.h"
+#include "webkit/glue/window_open_disposition.h"
+
+using WebKit::WebDragOperationCopy;
+
+namespace {
+
+// A helper method for getting the preferred drop effect.
+DWORD GetPreferredDropEffect(DWORD effect) {
+  if (effect & DROPEFFECT_COPY)
+    return DROPEFFECT_COPY;
+  if (effect & DROPEFFECT_LINK)
+    return DROPEFFECT_LINK;
+  if (effect & DROPEFFECT_MOVE)
+    return DROPEFFECT_MOVE;
+  return DROPEFFECT_NONE;
+}
+
+}  // anonymous namespace
+
+// InterstitialDropTarget is like a BaseDropTarget implementation that
+// WebDropTarget passes through to if an interstitial is showing.  Rather than
+// passing messages on to the renderer, we just check to see if there's a link
+// in the drop data and handle links as navigations.
+class InterstitialDropTarget {
+ public:
+  explicit InterstitialDropTarget(TabContents* tab_contents)
+      : tab_contents_(tab_contents) {}
+
+  DWORD OnDragEnter(IDataObject* data_object, DWORD effect) {
+    return ClipboardUtil::HasUrl(data_object) ? GetPreferredDropEffect(effect)
+                                              : DROPEFFECT_NONE;
+  }
+
+  DWORD OnDragOver(IDataObject* data_object, DWORD effect) {
+    return ClipboardUtil::HasUrl(data_object) ? GetPreferredDropEffect(effect)
+                                              : DROPEFFECT_NONE;
+  }
+
+  void OnDragLeave(IDataObject* data_object) {
+  }
+
+  DWORD OnDrop(IDataObject* data_object, DWORD effect) {
+    if (ClipboardUtil::HasUrl(data_object)) {
+      std::wstring url;
+      std::wstring title;
+      ClipboardUtil::GetUrl(data_object, &url, &title);
+      tab_contents_->OpenURL(GURL(url), GURL(), CURRENT_TAB,
+                             PageTransition::AUTO_BOOKMARK);
+      return GetPreferredDropEffect(effect);
+    }
+    return DROPEFFECT_NONE;
+  }
+
+ private:
+  TabContents* tab_contents_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(InterstitialDropTarget);
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// WebDropTarget, public:
+
+WebDropTarget::WebDropTarget(HWND source_hwnd, TabContents* tab_contents)
+    : BaseDropTarget(source_hwnd),
+      tab_contents_(tab_contents),
+      current_rvh_(NULL),
+      is_drop_target_(false),
+      interstitial_drop_target_(new InterstitialDropTarget(tab_contents)) {
+}
+
+WebDropTarget::~WebDropTarget() {
+}
+
+DWORD WebDropTarget::OnDragEnter(IDataObject* data_object,
+                                 DWORD key_state,
+                                 POINT cursor_position,
+                                 DWORD effect) {
+  current_rvh_ = tab_contents_->render_view_host();
+
+  // Don't pass messages to the renderer if an interstitial page is showing
+  // because we don't want the interstitial page to navigate.  Instead,
+  // pass the messages on to a separate interstitial DropTarget handler.
+  if (tab_contents_->showing_interstitial_page())
+    return interstitial_drop_target_->OnDragEnter(data_object, effect);
+
+  // TODO(tc): PopulateWebDropData can be slow depending on what is in the
+  // IDataObject.  Maybe we can do this in a background thread.
+  WebDropData drop_data(GetDragIdentity());
+  WebDropData::PopulateWebDropData(data_object, &drop_data);
+
+  if (drop_data.url.is_empty())
+    OSExchangeDataProviderWin::GetPlainTextURL(data_object, &drop_data.url);
+
+  is_drop_target_ = true;
+
+  POINT client_pt = cursor_position;
+  ScreenToClient(GetHWND(), &client_pt);
+  tab_contents_->render_view_host()->DragTargetDragEnter(drop_data,
+      gfx::Point(client_pt.x, client_pt.y),
+      gfx::Point(cursor_position.x, cursor_position.y),
+      WebDragOperationCopy);  // FIXME(snej): Send actual operation
+
+  // We lie here and always return a DROPEFFECT because we don't want to
+  // wait for the IPC call to return.
+  return GetPreferredDropEffect(effect);
+}
+
+DWORD WebDropTarget::OnDragOver(IDataObject* data_object,
+                                DWORD key_state,
+                                POINT cursor_position,
+                                DWORD effect) {
+  DCHECK(current_rvh_);
+  if (current_rvh_ != tab_contents_->render_view_host())
+    OnDragEnter(data_object, key_state, cursor_position, effect);
+
+  if (tab_contents_->showing_interstitial_page())
+    return interstitial_drop_target_->OnDragOver(data_object, effect);
+
+  POINT client_pt = cursor_position;
+  ScreenToClient(GetHWND(), &client_pt);
+  tab_contents_->render_view_host()->DragTargetDragOver(
+      gfx::Point(client_pt.x, client_pt.y),
+      gfx::Point(cursor_position.x, cursor_position.y),
+      WebDragOperationCopy);  // FIXME(snej): Send actual operation
+
+  if (!is_drop_target_)
+    return DROPEFFECT_NONE;
+
+  return GetPreferredDropEffect(effect);
+}
+
+void WebDropTarget::OnDragLeave(IDataObject* data_object) {
+  DCHECK(current_rvh_);
+  if (current_rvh_ != tab_contents_->render_view_host())
+    return;
+
+  if (tab_contents_->showing_interstitial_page()) {
+    interstitial_drop_target_->OnDragLeave(data_object);
+  } else {
+    tab_contents_->render_view_host()->DragTargetDragLeave();
+  }
+}
+
+DWORD WebDropTarget::OnDrop(IDataObject* data_object,
+                            DWORD key_state,
+                            POINT cursor_position,
+                            DWORD effect) {
+  DCHECK(current_rvh_);
+  if (current_rvh_ != tab_contents_->render_view_host())
+    OnDragEnter(data_object, key_state, cursor_position, effect);
+
+  if (tab_contents_->showing_interstitial_page())
+    interstitial_drop_target_->OnDragOver(data_object, effect);
+
+  if (tab_contents_->showing_interstitial_page())
+    return interstitial_drop_target_->OnDrop(data_object, effect);
+
+  POINT client_pt = cursor_position;
+  ScreenToClient(GetHWND(), &client_pt);
+  tab_contents_->render_view_host()->DragTargetDrop(
+      gfx::Point(client_pt.x, client_pt.y),
+      gfx::Point(cursor_position.x, cursor_position.y));
+
+  current_rvh_ = NULL;
+
+  // We lie and always claim that the drop operation didn't happen because we
+  // don't want to wait for the renderer to respond.
+  return DROPEFFECT_NONE;
+}