src/chrome/browser/ui/cocoa/draggable_button_unittest.mm

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/mac/scoped_nsobject.h"
   6 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
   7 #import "chrome/browser/ui/cocoa/draggable_button.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9 #include "testing/platform_test.h"
  10 #import "ui/base/test/cocoa_test_event_utils.h"
  11
  12 @interface TestableDraggableButton : DraggableButton {
  13   NSUInteger dragCount_;
  14   BOOL wasTriggered_;
  15 }
  16 - (void)trigger:(id)sender;
  17 - (BOOL)wasTriggered;
  18 - (NSUInteger)dragCount;
  19 @end
  20
  21 @implementation TestableDraggableButton
  22 - (id)initWithFrame:(NSRect)frame {
  23   if ((self = [super initWithFrame:frame])) {
  24     dragCount_ = 0;
  25     wasTriggered_ = NO;
  26   }
  27   return self;
  28 }
  29 - (void)beginDrag:(NSEvent*)theEvent {
  30   dragCount_++;
  31 }
  32
  33 - (void)trigger:(id)sender {
  34   wasTriggered_ = YES;
  35 }
  36
  37 - (BOOL)wasTriggered {
  38   return wasTriggered_;
  39 }
  40
  41 - (NSUInteger)dragCount {
  42   return dragCount_;
  43 }
  44 @end
  45
  46 class DraggableButtonTest : public CocoaTest {};
  47
  48 // Make sure the basic case of "click" still works.
  49 TEST_F(DraggableButtonTest, DownUp) {
  50   base::scoped_nsobject<TestableDraggableButton> button(
  51       [[TestableDraggableButton alloc]
  52           initWithFrame:NSMakeRect(0, 0, 500, 500)]);
  53   [[test_window() contentView] addSubview:button.get()];
  54   [button setTarget:button];
  55   [button setAction:@selector(trigger:)];
  56   EXPECT_FALSE([button wasTriggered]);
  57   NSEvent* downEvent =
  58       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(10,10),
  59                                                 NSLeftMouseDown,
  60                                                 0);
  61   NSEvent* upEvent =
  62       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(10,10),
  63                                                 NSLeftMouseUp,
  64                                                 0);
  65   [NSApp postEvent:upEvent atStart:YES];
  66   [test_window() sendEvent:downEvent];
  67   EXPECT_TRUE([button wasTriggered]);  // confirms target/action fired
  68 }
  69
  70 TEST_F(DraggableButtonTest, DraggableHysteresis) {
  71   base::scoped_nsobject<TestableDraggableButton> button(
  72       [[TestableDraggableButton alloc]
  73           initWithFrame:NSMakeRect(0, 0, 500, 500)]);
  74   [[test_window() contentView] addSubview:button.get()];
  75   NSEvent* downEvent =
  76       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(10,10),
  77                                                 NSLeftMouseDown,
  78                                                 0);
  79   NSEvent* firstMove =
  80       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(11,11),
  81                                                 NSLeftMouseDragged,
  82                                                 0);
  83   NSEvent* firstUpEvent =
  84       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(11,11),
  85                                                 NSLeftMouseUp,
  86                                                 0);
  87   NSEvent* secondMove =
  88       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(100,100),
  89                                                 NSLeftMouseDragged,
  90                                                 0);
  91   NSEvent* secondUpEvent =
  92       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(100,100),
  93                                                 NSLeftMouseUp,
  94                                                 0);
  95   // If the mouse only moves one pixel in each direction
  96   // it should not cause a drag.
  97   [NSApp postEvent:firstUpEvent atStart:YES];
  98   [NSApp postEvent:firstMove atStart:YES];
  99   [button mouseDown:downEvent];
 100   EXPECT_EQ(0U, [button dragCount]);
 101
 102   // If the mouse moves > 5 pixels in either direciton
 103   // it should cause a drag.
 104   [NSApp postEvent:secondUpEvent atStart:YES];
 105   [NSApp postEvent:secondMove atStart:YES];
 106   [button mouseDown:downEvent];
 107   EXPECT_EQ(1U, [button dragCount]);
 108 }
 109
 110 TEST_F(DraggableButtonTest, ResetState) {
 111   base::scoped_nsobject<TestableDraggableButton> button(
 112       [[TestableDraggableButton alloc]
 113           initWithFrame:NSMakeRect(0, 0, 500, 500)]);
 114   [[test_window() contentView] addSubview:button.get()];
 115   NSEvent* downEvent =
 116       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(10,10),
 117                                                 NSLeftMouseDown,
 118                                                 0);
 119   NSEvent* moveEvent =
 120       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(100,100),
 121                                                 NSLeftMouseDragged,
 122                                                 0);
 123   NSEvent* upEvent =
 124       cocoa_test_event_utils::MouseEventAtPoint(NSMakePoint(100,100),
 125                                                 NSLeftMouseUp,
 126                                                 0);
 127   // If the mouse moves > 5 pixels in either direciton it should cause a drag.
 128   [NSApp postEvent:upEvent atStart:YES];
 129   [NSApp postEvent:moveEvent atStart:YES];
 130   [button mouseDown:downEvent];
 131
 132   // The button should not be highlighted after the drag finishes.
 133   EXPECT_FALSE([[button cell] isHighlighted]);
 134   EXPECT_EQ(1U, [button dragCount]);
 135
 136   // We should be able to initiate another drag immediately after the first one.
 137   [NSApp postEvent:upEvent atStart:YES];
 138   [NSApp postEvent:moveEvent atStart:YES];
 139   [button mouseDown:downEvent];
 140   EXPECT_EQ(2U, [button dragCount]);
 141   EXPECT_FALSE([[button cell] isHighlighted]);
 142 }