Allow dragging and dropping of URLs to any portion of the toolbar view....

chrome/browser/ui/views/toolbar_view.cc

 // Copyright (c) 2011 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/browser/ui/views/toolbar_view.h"
 
 #include "base/i18n/number_formatting.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/accessibility/browser_accessibility_state.h"
@@ skipping 594 matching lines @@
                           width() - kPopupBackgroundEdge->width(), top_spacing);
   }
 
   // For glass, we need to draw a black line below the location bar to separate
   // it from the content area.  For non-glass, the NonClientView draws the
   // toolbar background below the location bar for us.
   if (GetWindow()->GetNonClientView()->UseNativeFrame())
     canvas->FillRectInt(SK_ColorBLACK, 0, height() - 1, width(), 1);
 }
 
+// Note this method is ignored on Windows, but needs to be implemented for
+// linux, where it is called before CanDrop().
+bool ToolbarView::GetDropFormats(
+    int* formats,
+    std::set<OSExchangeData::CustomFormat>* custom_formats) {
+  *formats = ui::OSExchangeData::URL | ui::OSExchangeData::STRING;
+  return true;
+}
+
+bool ToolbarView::CanDrop(const ui::OSExchangeData& data) {
+  // To support loading URLs by dropping into the toolbar, we need to support
+  // dropping URLs and/or text.
+  return data.HasURL() || data.HasString();
+}
+
+int ToolbarView::OnDragUpdated(const views::DropTargetEvent& event) {
+  if (event.source_operations() & ui::DragDropTypes::DRAG_COPY) {
+    return ui::DragDropTypes::DRAG_COPY;
+  } else if (event.source_operations() & ui::DragDropTypes::DRAG_LINK) {
+    return ui::DragDropTypes::DRAG_LINK;
+  }
+  return ui::DragDropTypes::DRAG_NONE;
+}
+
+int ToolbarView::OnPerformDrop(const views::DropTargetEvent& event) {
+  return location_bar_->location_entry()->OnPerformDrop(event);
+}
+
 void ToolbarView::OnThemeChanged() {
   LoadImages();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ToolbarView, protected:
 
 // Override this so that when the user presses F6 to rotate toolbar panes,
 // the location bar gets focus, not the first control in the toolbar.
 views::View* ToolbarView::GetDefaultFocusableChild() {
@@ skipping 146 matching lines @@
     NOTREACHED();
 #endif
   } else {
     NOTREACHED();
   }
 
   canvas->DrawBitmapInt(badge, icon.width() - badge.width(), kBadgeTopMargin);
 
   return canvas->ExtractBitmap();
 }