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// Copyright (c) 2006-2008 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/tab_contents/web_drag_source.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/notification_type.h"
#include "chrome/common/notification_service.h"
using WebKit::WebDragOperationNone;
using WebKit::WebDragOperationCopy;
namespace {
static void GetCursorPositions(gfx::NativeWindow wnd, gfx::Point* client,
gfx::Point* screen) {
#if defined(OS_WIN)
POINT cursor_pos;
GetCursorPos(&cursor_pos);
screen->SetPoint(cursor_pos.x, cursor_pos.y);
ScreenToClient(wnd, &cursor_pos);
client->SetPoint(cursor_pos.x, cursor_pos.y);
#else
// TODO(port): Get the cursor positions.
NOTIMPLEMENTED();
#endif
}
} // namespace
///////////////////////////////////////////////////////////////////////////////
// WebDragSource, public:
WebDragSource::WebDragSource(gfx::NativeWindow source_wnd,
TabContents* tab_contents)
: BaseDragSource(),
source_wnd_(source_wnd),
render_view_host_(tab_contents->render_view_host()) {
registrar_.Add(this, NotificationType::TAB_CONTENTS_SWAPPED,
Source<TabContents>(tab_contents));
registrar_.Add(this, NotificationType::TAB_CONTENTS_DISCONNECTED,
Source<TabContents>(tab_contents));
}
void WebDragSource::OnDragSourceCancel() {
if (!render_view_host_)
return;
gfx::Point client;
gfx::Point screen;
GetCursorPositions(source_wnd_, &client, &screen);
render_view_host_->DragSourceEndedAt(client.x(), client.y(),
screen.x(), screen.y(),
WebDragOperationNone);
}
void WebDragSource::OnDragSourceDrop() {
if (!render_view_host_)
return;
gfx::Point client;
gfx::Point screen;
GetCursorPositions(source_wnd_, &client, &screen);
render_view_host_->DragSourceEndedAt(client.x(), client.y(),
screen.x(), screen.y(),
WebDragOperationCopy);
// TODO(jpa): This needs to be fixed to send the actual drag operation.
}
void WebDragSource::OnDragSourceMove() {
if (!render_view_host_)
return;
gfx::Point client;
gfx::Point screen;
GetCursorPositions(source_wnd_, &client, &screen);
render_view_host_->DragSourceMovedTo(client.x(), client.y(),
screen.x(), screen.y());
}
void WebDragSource::Observe(NotificationType type,
const NotificationSource& source, const NotificationDetails& details) {
if (NotificationType::TAB_CONTENTS_SWAPPED == type) {
// When the tab contents get swapped, our render view host goes away.
// That's OK, we can continue the drag, we just can't send messages back to
// our drag source.
render_view_host_ = NULL;
} else if (NotificationType::TAB_CONTENTS_DISCONNECTED) {
NOTREACHED();
}
}
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