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// Copyright 2014 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/controls/native/native_view_host_mac.h"
#import <Cocoa/Cocoa.h>
#include "base/logging.h"
#include "base/mac/foundation_util.h"
#import "ui/views/cocoa/bridged_content_view.h"
#include "ui/views/controls/native/native_view_host.h"
#include "ui/views/widget/widget.h"
namespace views {
namespace {
// Reparents |native_view| to be a child of the native content view of
// |new_parent|.
void ReparentNSView(NSView* native_view, Widget* new_parent) {
DCHECK(native_view);
// Mac's NativeViewHost has no support for hosting its own child widgets.
// This check is probably overly restrictive, since the Widget containing the
// NativeViewHost _is_ allowed child Widgets. However, we don't know yet
// whether those child Widgets need to be distinguished from Widgets that code
// might want to associate with the hosted NSView instead.
{
Widget::Widgets child_widgets;
Widget::GetAllChildWidgets(native_view, &child_widgets);
CHECK_GE(1u, child_widgets.size()); // 1 (itself) or 0 if detached.
}
if (!new_parent) {
[native_view removeFromSuperview];
return;
}
BridgedContentView* new_superview =
base::mac::ObjCCastStrict<BridgedContentView>(
new_parent->GetNativeView());
DCHECK(new_superview);
[new_superview addSubview:native_view];
}
} // namespace
NativeViewHostMac::NativeViewHostMac(NativeViewHost* host) : host_(host) {
}
NativeViewHostMac::~NativeViewHostMac() {
}
////////////////////////////////////////////////////////////////////////////////
// NativeViewHostMac, NativeViewHostWrapper implementation:
void NativeViewHostMac::AttachNativeView() {
DCHECK(host_->native_view());
ReparentNSView(host_->native_view(), host_->GetWidget());
}
void NativeViewHostMac::NativeViewDetaching(bool destroyed) {
// |destroyed| is only true if this class calls host_->NativeViewDestroyed().
// TODO(tapted): See if that's needed on Mac, since views are hard to destroy
// by themselves.
DCHECK(!destroyed);
[host_->native_view() setHidden:YES];
ReparentNSView(host_->native_view(), NULL);
}
void NativeViewHostMac::AddedToWidget() {
if (!host_->native_view())
return;
AttachNativeView();
host_->Layout();
}
void NativeViewHostMac::RemovedFromWidget() {
if (!host_->native_view())
return;
NativeViewDetaching(false);
}
void NativeViewHostMac::InstallClip(int x, int y, int w, int h) {
NOTIMPLEMENTED();
}
bool NativeViewHostMac::HasInstalledClip() {
return false;
}
void NativeViewHostMac::UninstallClip() {
NOTIMPLEMENTED();
}
void NativeViewHostMac::ShowWidget(int x, int y, int w, int h) {
if (host_->fast_resize())
NOTIMPLEMENTED();
// Coordinates will be from the top left of the parent Widget. The NativeView
// is already in the same NSWindow, so just flip to get Cooca coordinates and
// then convert to the containing view.
NSRect window_rect = NSMakeRect(
x,
host_->GetWidget()->GetClientAreaBoundsInScreen().height() - y - h,
w,
h);
// Convert window coordinates to the hosted view's superview, since that's how
// coordinates of the hosted view's frame is based.
NSRect container_rect =
[[host_->native_view() superview] convertRect:window_rect fromView:nil];
[host_->native_view() setFrame:container_rect];
[host_->native_view() setHidden:NO];
}
void NativeViewHostMac::HideWidget() {
[host_->native_view() setHidden:YES];
}
void NativeViewHostMac::SetFocus() {
if ([host_->native_view() acceptsFirstResponder])
[[host_->native_view() window] makeFirstResponder:host_->native_view()];
}
gfx::NativeViewAccessible NativeViewHostMac::GetNativeViewAccessible() {
return NULL;
}
gfx::NativeCursor NativeViewHostMac::GetCursor(int x, int y) {
NOTIMPLEMENTED();
return gfx::kNullCursor;
}
// static
NativeViewHostWrapper* NativeViewHostWrapper::CreateWrapper(
NativeViewHost* host) {
return new NativeViewHostMac(host);
}
} // namespace views
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