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// 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/frame/browser_root_view.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/autocomplete/autocomplete.h"
#include "chrome/browser/autocomplete/autocomplete_classifier.h"
#include "chrome/browser/autocomplete/autocomplete_match.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/omnibox/location_bar.h"
#include "chrome/browser/ui/views/frame/browser_frame.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/tabs/tab_strip.h"
#include "grit/chromium_strings.h"
#include "ui/base/dragdrop/drag_drop_types.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "ui/base/l10n/l10n_util.h"
BrowserRootView::BrowserRootView(BrowserView* browser_view,
views::Widget* widget)
: views::RootView(widget),
browser_view_(browser_view),
forwarding_to_tab_strip_(false) {
SetAccessibleName(l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
}
bool BrowserRootView::GetDropFormats(
int* formats,
std::set<ui::OSExchangeData::CustomFormat>* custom_formats) {
if (tabstrip() && tabstrip()->IsVisible() && !tabstrip()->IsAnimating()) {
*formats = ui::OSExchangeData::URL | ui::OSExchangeData::STRING;
return true;
}
return false;
}
bool BrowserRootView::AreDropTypesRequired() {
return true;
}
bool BrowserRootView::CanDrop(const ui::OSExchangeData& data) {
if (!tabstrip() || !tabstrip()->IsVisible() || tabstrip()->IsAnimating())
return false;
// If there is a URL, we'll allow the drop.
if (data.HasURL())
return true;
// If there isn't a URL, see if we can 'paste and go'.
return GetPasteAndGoURL(data, NULL);
}
void BrowserRootView::OnDragEntered(const views::DropTargetEvent& event) {
if (ShouldForwardToTabStrip(event)) {
forwarding_to_tab_strip_ = true;
scoped_ptr<views::DropTargetEvent> mapped_event(
MapEventToTabStrip(event, event.data()));
tabstrip()->OnDragEntered(*mapped_event.get());
}
}
int BrowserRootView::OnDragUpdated(const views::DropTargetEvent& event) {
if (ShouldForwardToTabStrip(event)) {
scoped_ptr<views::DropTargetEvent> mapped_event(
MapEventToTabStrip(event, event.data()));
if (!forwarding_to_tab_strip_) {
tabstrip()->OnDragEntered(*mapped_event.get());
forwarding_to_tab_strip_ = true;
}
return tabstrip()->OnDragUpdated(*mapped_event.get());
} else if (forwarding_to_tab_strip_) {
forwarding_to_tab_strip_ = false;
tabstrip()->OnDragExited();
}
return ui::DragDropTypes::DRAG_NONE;
}
void BrowserRootView::OnDragExited() {
if (forwarding_to_tab_strip_) {
forwarding_to_tab_strip_ = false;
tabstrip()->OnDragExited();
}
}
int BrowserRootView::OnPerformDrop(const views::DropTargetEvent& event) {
if (!forwarding_to_tab_strip_)
return ui::DragDropTypes::DRAG_NONE;
// Extract the URL and create a new ui::OSExchangeData containing the URL. We
// do this as the TabStrip doesn't know about the autocomplete edit and needs
// to know about it to handle 'paste and go'.
GURL url;
std::wstring title;
ui::OSExchangeData mapped_data;
if (!event.data().GetURLAndTitle(&url, &title) || !url.is_valid()) {
// The url isn't valid. Use the paste and go url.
if (GetPasteAndGoURL(event.data(), &url))
mapped_data.SetURL(url, std::wstring());
// else case: couldn't extract a url or 'paste and go' url. This ends up
// passing through an ui::OSExchangeData with nothing in it. We need to do
// this so that the tab strip cleans up properly.
} else {
mapped_data.SetURL(url, std::wstring());
}
forwarding_to_tab_strip_ = false;
scoped_ptr<views::DropTargetEvent> mapped_event(
MapEventToTabStrip(event, mapped_data));
return tabstrip()->OnPerformDrop(*mapped_event);
}
bool BrowserRootView::ShouldForwardToTabStrip(
const views::DropTargetEvent& event) {
if (!tabstrip()->IsVisible())
return false;
// Allow the drop as long as the mouse is over the tabstrip or vertically
// before it.
gfx::Point tab_loc_in_host;
ConvertPointToView(tabstrip(), this, &tab_loc_in_host);
return event.y() < tab_loc_in_host.y() + tabstrip()->height();
}
views::DropTargetEvent* BrowserRootView::MapEventToTabStrip(
const views::DropTargetEvent& event,
const ui::OSExchangeData& data) {
gfx::Point tab_strip_loc(event.location());
ConvertPointToView(this, tabstrip(), &tab_strip_loc);
return new views::DropTargetEvent(data, tab_strip_loc.x(),
tab_strip_loc.y(),
event.source_operations());
}
BaseTabStrip* BrowserRootView::tabstrip() const {
return browser_view_->tabstrip();
}
bool BrowserRootView::GetPasteAndGoURL(const ui::OSExchangeData& data,
GURL* url) {
if (!data.HasString())
return false;
std::wstring text;
if (!data.GetString(&text) || text.empty())
return false;
AutocompleteMatch match;
browser_view_->browser()->profile()->GetAutocompleteClassifier()->Classify(
WideToUTF16Hack(text), string16(), false, &match, NULL);
if (!match.destination_url.is_valid())
return false;
if (url)
*url = match.destination_url;
return true;
}
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