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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 "ui/views/widget/root_view.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"
namespace ui {
namespace internal {
////////////////////////////////////////////////////////////////////////////////
// RootView, public:
RootView::RootView(Widget* widget, View* contents_view)
: widget_(widget),
mouse_pressed_handler_(NULL),
mouse_move_handler_(NULL) {
SetLayoutManager(new FillLayout);
AddChildView(contents_view);
}
RootView::~RootView() {
}
////////////////////////////////////////////////////////////////////////////////
// RootView, View overrides:
void RootView::OnViewRemoved(View* parent, View* child) {
if (child == mouse_pressed_handler_)
mouse_pressed_handler_ = NULL;
}
bool RootView::OnKeyPressed(const KeyEvent& event) {
return true;
}
bool RootView::OnKeyReleased(const KeyEvent& event) {
return true;
}
bool RootView::OnMouseWheel(const MouseWheelEvent& event) {
return true;
}
bool RootView::OnMousePressed(const MouseEvent& event) {
bool handled = false;
// Find the most View most tightly enclosing the event location that wants to
// handle events.
mouse_pressed_handler_ = GetEventHandlerForPoint(event.location());
// Walk up the tree from that View until we find one that handles it.
while (mouse_pressed_handler_ && mouse_pressed_handler_ != this) {
if (!mouse_pressed_handler_->enabled())
break;
MouseEvent target_event(event, this, mouse_pressed_handler_);
drag_info_.Reset();
bool handled = mouse_pressed_handler_->MousePressed(target_event,
&drag_info_);
// MousePressed() may have resulted in the handler removing itself from the
// hierarchy, which will NULL-out |mouse_pressed_handler_|.
if (!mouse_pressed_handler_)
break;
if (handled)
return true;
mouse_pressed_handler_ = mouse_pressed_handler_->parent();
}
return false;
}
bool RootView::OnMouseDragged(const MouseEvent& event) {
// TODO(beng): Update cursor.
if (mouse_pressed_handler_)
return mouse_pressed_handler_->MouseDragged(event, &drag_info_);
return false;
}
void RootView::OnMouseReleased(const MouseEvent& event) {
// TODO(beng): Update cursor.
if (mouse_pressed_handler_) {
MouseEvent released_event(event, this, mouse_pressed_handler_);
View* mouse_pressed_handler = mouse_pressed_handler_;
mouse_pressed_handler_ = NULL;
mouse_pressed_handler->MouseReleased(released_event);
}
}
void RootView::OnMouseCaptureLost() {
if (mouse_pressed_handler_) {
View* mouse_pressed_handler = mouse_pressed_handler_;
mouse_pressed_handler_ = NULL;
mouse_pressed_handler->OnMouseCaptureLost();
}
}
void RootView::OnMouseMoved(const MouseEvent& event) {
// TODO(beng): Update cursor.
View* v = GetEventHandlerForPoint(event.location());
while (v && !v->enabled() && (v != mouse_move_handler_))
v = v->parent();
if (v && v != this) {
if (v != mouse_move_handler_) {
OnMouseExited(event);
mouse_move_handler_ = v;
MouseEvent entered_event(event, this, mouse_move_handler_);
mouse_move_handler_->OnMouseEntered(entered_event);
}
MouseEvent moved_event(event, this, mouse_move_handler_);
mouse_move_handler_->OnMouseMoved(moved_event);
} else {
OnMouseExited(event);
}
}
void RootView::OnMouseExited(const MouseEvent& event) {
if (mouse_move_handler_) {
MouseEvent exited_event(event, this, mouse_move_handler_);
mouse_move_handler_->OnMouseExited(exited_event);
mouse_move_handler_ = NULL;
}
}
void RootView::Paint(gfx::Canvas* canvas) {
// Public pass-thru to protected base class method.
View::Paint(canvas);
}
void RootView::InvalidateRect(const gfx::Rect& invalid_rect) {
widget_->InvalidateRect(invalid_rect);
}
Widget* RootView::GetWidget() const {
return widget_;
}
////////////////////////////////////////////////////////////////////////////////
// RootView, private:
} // namespace internal
} // namespace ui
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