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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "chrome/app_shim/app_shim_render_widget_host_view_mac_delegate.h"
#include "chrome/app/chrome_command_ids.h"
#import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_history_swiper.h"
#include "components/remote_cocoa/app_shim/native_widget_ns_window_bridge.h"
#include "components/remote_cocoa/app_shim/ns_view_ids.h"
#include "components/remote_cocoa/common/native_widget_ns_window_host.mojom.h"
#include "ui/gfx/native_widget_types.h"
@interface AppShimRenderWidgetHostViewMacDelegate () <HistorySwiperDelegate>
@end
@implementation AppShimRenderWidgetHostViewMacDelegate {
uint64_t _nsviewIDThatWantsHistoryOverlay;
// Responsible for 2-finger swipes history navigation.
HistorySwiper* __strong _historySwiper;
}
- (instancetype)initWithRenderWidgetHostNSViewID:
(uint64_t)renderWidgetHostNSViewID {
if (self = [super init]) {
_nsviewIDThatWantsHistoryOverlay = renderWidgetHostNSViewID;
_historySwiper = [[HistorySwiper alloc] initWithDelegate:self];
}
return self;
}
- (void)dealloc {
_historySwiper.delegate = nil;
}
// Handle an event. All incoming key and mouse events flow through this
// delegate method if implemented. Return YES if the event is fully handled, or
// NO if normal processing should take place.
- (BOOL)handleEvent:(NSEvent*)event {
return [_historySwiper handleEvent:event];
}
// NSWindow events.
// This is a low level API which provides touches associated with an event.
// It is used in conjunction with gestures to determine finger placement
// on the trackpad.
- (void)touchesMovedWithEvent:(NSEvent*)event {
[_historySwiper touchesMovedWithEvent:event];
}
- (void)touchesBeganWithEvent:(NSEvent*)event {
[_historySwiper touchesBeganWithEvent:event];
}
- (void)touchesCancelledWithEvent:(NSEvent*)event {
[_historySwiper touchesCancelledWithEvent:event];
}
- (void)touchesEndedWithEvent:(NSEvent*)event {
[_historySwiper touchesEndedWithEvent:event];
}
- (void)rendererHandledGestureScrollEvent:(const blink::WebGestureEvent&)event
consumed:(BOOL)consumed {
[_historySwiper rendererHandledGestureScrollEvent:event consumed:consumed];
}
- (void)rendererHandledOverscrollEvent:(const ui::DidOverscrollParams&)params {
[_historySwiper onOverscrolled:params];
}
// HistorySwiperDelegate methods.
- (BOOL)shouldAllowHistorySwiping {
return YES;
}
- (NSView*)viewThatWantsHistoryOverlay {
return remote_cocoa::GetNSViewFromId(_nsviewIDThatWantsHistoryOverlay);
}
- (BOOL)canNavigateInDirection:(history_swiper::NavigationDirection)direction
onWindow:(NSWindow*)window {
auto* bridge =
remote_cocoa::NativeWidgetNSWindowBridge::GetFromNSWindow(window);
if (!bridge) {
return NO;
}
if (direction == history_swiper::kForwards) {
return bridge->CanGoForward();
} else {
return bridge->CanGoBack();
}
}
- (void)navigateInDirection:(history_swiper::NavigationDirection)direction
onWindow:(NSWindow*)window {
auto* bridge =
remote_cocoa::NativeWidgetNSWindowBridge::GetFromNSWindow(window);
if (!bridge) {
return;
}
bool was_executed = false;
if (direction == history_swiper::kForwards) {
bridge->host()->ExecuteCommand(
IDC_FORWARD, WindowOpenDisposition::CURRENT_TAB, false, &was_executed);
} else {
bridge->host()->ExecuteCommand(IDC_BACK, WindowOpenDisposition::CURRENT_TAB,
false, &was_executed);
}
DCHECK(was_executed);
}
- (void)backwardsSwipeNavigationLikely {
// TODO(mcnee): It's unclear whether preloading predictions would be useful in
// this context. For now we don't do any prediction. See
// https://crbug.com/1422266 for context.
}
@end
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