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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/base/cocoa/base_view.h"
#include "base/mac/mac_util.h"
NSString* kViewDidBecomeFirstResponder =
@"Chromium.kViewDidBecomeFirstResponder";
NSString* kSelectionDirection = @"Chromium.kSelectionDirection";
@implementation BaseView
- (instancetype)initWithFrame:(NSRect)frame {
if ((self = [super initWithFrame:frame])) {
[self enableTracking];
}
return self;
}
- (instancetype)initWithCoder:(NSCoder*)decoder {
if ((self = [super initWithCoder:decoder])) {
[self enableTracking];
}
return self;
}
- (void)dealloc {
[self disableTracking];
[super dealloc];
}
- (void)enableTracking {
if (trackingArea_.get())
return;
NSTrackingAreaOptions trackingOptions = NSTrackingMouseEnteredAndExited |
NSTrackingMouseMoved |
NSTrackingActiveAlways |
NSTrackingInVisibleRect;
trackingArea_.reset([[CrTrackingArea alloc] initWithRect:NSZeroRect
options:trackingOptions
owner:self
userInfo:nil]);
[self addTrackingArea:trackingArea_.get()];
}
- (void)disableTracking {
if (trackingArea_.get()) {
[self removeTrackingArea:trackingArea_.get()];
trackingArea_.reset();
}
}
- (void)updateTrackingAreas {
[super updateTrackingAreas];
// NSTrackingInVisibleRect doesn't work correctly with Lion's window resizing,
// http://crbug.com/176725 / http://openradar.appspot.com/radar?id=2773401 .
// Work around it by reinstalling the tracking area after window resize.
// This AppKit bug is fixed on Yosemite, so we only apply this workaround on
// 10.7 to 10.9.
if (base::mac::IsOSMavericksOrEarlier() && base::mac::IsOSLionOrLater()) {
[self disableTracking];
[self enableTracking];
}
}
- (void)mouseEvent:(NSEvent*)theEvent {
// This method left intentionally blank.
}
- (EventHandled)keyEvent:(NSEvent*)theEvent {
// The default implementation of this method does not handle any key events.
// Derived classes should return kEventHandled if they handled an event,
// otherwise it will be forwarded on to |super|.
return kEventNotHandled;
}
- (void)forceTouchEvent:(NSEvent*)theEvent {
// This method left intentionally blank.
}
- (void)mouseDown:(NSEvent*)theEvent {
dragging_ = YES;
[self mouseEvent:theEvent];
}
- (void)rightMouseDown:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)otherMouseDown:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)mouseUp:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
dragging_ = NO;
if (pendingExitEvent_.get()) {
NSEvent* exitEvent =
[NSEvent enterExitEventWithType:NSMouseExited
location:[theEvent locationInWindow]
modifierFlags:[theEvent modifierFlags]
timestamp:[theEvent timestamp]
windowNumber:[theEvent windowNumber]
context:[theEvent context]
eventNumber:[pendingExitEvent_.get() eventNumber]
trackingNumber:[pendingExitEvent_.get() trackingNumber]
userData:[pendingExitEvent_.get() userData]];
[self mouseEvent:exitEvent];
pendingExitEvent_.reset();
}
}
- (void)rightMouseUp:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)otherMouseUp:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)mouseMoved:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)mouseDragged:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)rightMouseDragged:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)otherMouseDragged:(NSEvent*)theEvent {
[self mouseEvent:theEvent];
}
- (void)mouseEntered:(NSEvent*)theEvent {
if (pendingExitEvent_.get()) {
pendingExitEvent_.reset();
return;
}
[self mouseEvent:theEvent];
}
- (void)mouseExited:(NSEvent*)theEvent {
// The tracking area will send an exit event even during a drag, which isn't
// how the event flow for drags should work. This stores the exit event, and
// sends it when the drag completes instead.
if (dragging_) {
pendingExitEvent_.reset([theEvent retain]);
return;
}
[self mouseEvent:theEvent];
}
- (void)keyDown:(NSEvent*)theEvent {
if ([self keyEvent:theEvent] != kEventHandled)
[super keyDown:theEvent];
}
- (void)keyUp:(NSEvent*)theEvent {
if ([self keyEvent:theEvent] != kEventHandled)
[super keyUp:theEvent];
}
- (void)pressureChangeWithEvent:(NSEvent*)theEvent {
NSInteger newStage = [theEvent stage];
if (pressureEventStage_ == newStage)
return;
// Call the force touch event when the stage reaches 2, which is the value
// for force touch.
if (newStage == 2) {
[self forceTouchEvent:theEvent];
}
pressureEventStage_ = newStage;
}
- (void)flagsChanged:(NSEvent*)theEvent {
if ([self keyEvent:theEvent] != kEventHandled)
[super flagsChanged:theEvent];
}
- (gfx::Rect)flipNSRectToRect:(NSRect)rect {
gfx::Rect new_rect(NSRectToCGRect(rect));
new_rect.set_y(NSHeight([self bounds]) - new_rect.bottom());
return new_rect;
}
- (NSRect)flipRectToNSRect:(gfx::Rect)rect {
NSRect new_rect(NSRectFromCGRect(rect.ToCGRect()));
new_rect.origin.y = NSHeight([self bounds]) - NSMaxY(new_rect);
return new_rect;
}
@end
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