ui/base/cocoa/controls/hover_image_menu_button_unittest.mm

   1 // Copyright 2013 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 #import "ui/base/cocoa/controls/hover_image_menu_button.h"
   6
   7 #include "base/mac/foundation_util.h"
   8 #import "testing/gtest_mac.h"
   9 #import "ui/base/cocoa/controls/hover_image_menu_button_cell.h"
  10 #import "ui/gfx/test/ui_cocoa_test_helper.h"
  11
  12 namespace ui {
  13
  14 namespace {
  15
  16 // Test initialization and display of the NSPopUpButton that shows the drop-
  17 // down menu. Don't try to show the menu, since it will block the thread.
  18 class HoverImageMenuButtonTest : public CocoaTest {
  19  public:
  20   HoverImageMenuButtonTest() {}
  21
  22   // CocoaTest override:
  23   void SetUp() override;
  24
  25  protected:
  26   base::scoped_nsobject<HoverImageMenuButton> menu_button_;
  27   base::scoped_nsobject<NSImage> normal_;
  28   base::scoped_nsobject<NSImage> pressed_;
  29   base::scoped_nsobject<NSImage> hovered_;
  30
  31   DISALLOW_COPY_AND_ASSIGN(HoverImageMenuButtonTest);
  32 };
  33
  34 void HoverImageMenuButtonTest::SetUp() {
  35   menu_button_.reset(
  36       [[HoverImageMenuButton alloc] initWithFrame:NSMakeRect(0, 0, 50, 30)
  37                                         pullsDown:YES]);
  38
  39   normal_.reset([base::mac::ObjCCastStrict<NSImage>(
  40       [NSImage imageNamed:NSImageNameStatusAvailable]) retain]);
  41   pressed_.reset([base::mac::ObjCCastStrict<NSImage>(
  42       [NSImage imageNamed:NSImageNameStatusUnavailable]) retain]);
  43   hovered_.reset([base::mac::ObjCCastStrict<NSImage>(
  44       [NSImage imageNamed:NSImageNameStatusPartiallyAvailable]) retain]);
  45   [[menu_button_ hoverImageMenuButtonCell] setDefaultImage:normal_];
  46   [[menu_button_ hoverImageMenuButtonCell] setAlternateImage:pressed_];
  47   [[menu_button_ hoverImageMenuButtonCell] setHoverImage:hovered_];
  48
  49   CocoaTest::SetUp();
  50   [[test_window() contentView] addSubview:menu_button_];
  51 }
  52
  53 }  // namespace
  54
  55 TEST_VIEW(HoverImageMenuButtonTest, menu_button_);
  56
  57 // Tests that the correct image is chosen, depending on the cell's state flags.
  58 TEST_F(HoverImageMenuButtonTest, CheckImagesForState) {
  59   EXPECT_FALSE([[menu_button_ cell] isHovered]);
  60   EXPECT_FALSE([[menu_button_ cell] isHighlighted]);
  61   EXPECT_NSEQ(normal_, [[menu_button_ cell] imageToDraw]);
  62   [menu_button_ display];
  63
  64   [[menu_button_ cell] setHovered:YES];
  65   EXPECT_TRUE([[menu_button_ cell] isHovered]);
  66   EXPECT_FALSE([[menu_button_ cell] isHighlighted]);
  67   EXPECT_NSEQ(hovered_, [[menu_button_ cell] imageToDraw]);
  68   [menu_button_ display];
  69
  70   // Highlighted takes precendece over hover.
  71   [[menu_button_ cell] setHighlighted:YES];
  72   EXPECT_TRUE([[menu_button_ cell] isHovered]);
  73   EXPECT_TRUE([[menu_button_ cell] isHighlighted]);
  74   EXPECT_NSEQ(pressed_, [[menu_button_ cell] imageToDraw]);
  75   [menu_button_ display];
  76
  77   [[menu_button_ cell] setHovered:NO];
  78   EXPECT_FALSE([[menu_button_ cell] isHovered]);
  79   EXPECT_TRUE([[menu_button_ cell] isHighlighted]);
  80   EXPECT_NSEQ(pressed_, [[menu_button_ cell] imageToDraw]);
  81   [menu_button_ display];
  82
  83   [[menu_button_ cell] setHighlighted:NO];
  84   EXPECT_FALSE([[menu_button_ cell] isHovered]);
  85   EXPECT_FALSE([[menu_button_ cell] isHighlighted]);
  86   EXPECT_NSEQ(normal_, [[menu_button_ cell] imageToDraw]);
  87   [menu_button_ display];
  88 }
  89
  90 // Tests that calling the various setXImage functions calls setNeedsDisplay.
  91 TEST_F(HoverImageMenuButtonTest, NewImageCausesDisplay) {
  92   [menu_button_ display];
  93   EXPECT_FALSE([menu_button_ needsDisplay]);
  94
  95   // Uses setDefaultImage rather than setImage to ensure the image goes into the
  96   // NSPopUpButtonCell's menuItem. It is then accessible using [NSCell image].
  97   EXPECT_NSEQ(normal_, [[menu_button_ cell] image]);
  98   [[menu_button_ cell] setDefaultImage:pressed_];
  99   EXPECT_NSEQ(pressed_, [[menu_button_ cell] image]);
 100   EXPECT_TRUE([menu_button_ needsDisplay]);
 101   [menu_button_ display];
 102   EXPECT_FALSE([menu_button_ needsDisplay]);
 103
 104   // Highlighting the cell requires a redisplay.
 105   [[menu_button_ cell] setHighlighted:YES];
 106   EXPECT_TRUE([menu_button_ needsDisplay]);
 107   [menu_button_ display];
 108   EXPECT_FALSE([menu_button_ needsDisplay]);
 109
 110   // setAlternateImage comes from NSButtonCell. Ensure the added setHover*
 111   // behaviour matches.
 112   [[menu_button_ cell] setAlternateImage:normal_];
 113   EXPECT_TRUE([menu_button_ needsDisplay]);
 114   [menu_button_ display];
 115   EXPECT_FALSE([menu_button_ needsDisplay]);
 116
 117   // Setting the same image should not cause a redisplay.
 118   [[menu_button_ cell] setAlternateImage:normal_];
 119   EXPECT_FALSE([menu_button_ needsDisplay]);
 120
 121   // Unhighlighting requires a redisplay.
 122   [[menu_button_ cell] setHighlighted:NO];
 123   EXPECT_TRUE([menu_button_ needsDisplay]);
 124   [menu_button_ display];
 125   EXPECT_FALSE([menu_button_ needsDisplay]);
 126
 127   // Changing hover state requires a redisplay.
 128   [[menu_button_ cell] setHovered:YES];
 129   EXPECT_TRUE([menu_button_ needsDisplay]);
 130   [menu_button_ display];
 131   EXPECT_FALSE([menu_button_ needsDisplay]);
 132
 133   // setHoverImage comes directly from storage in HoverImageMenuButtonCell.
 134   [[menu_button_ cell] setHoverImage:normal_];
 135   EXPECT_TRUE([menu_button_ needsDisplay]);
 136   [menu_button_ display];
 137   EXPECT_FALSE([menu_button_ needsDisplay]);
 138
 139   // Setting the same image should not cause a redisplay.
 140   [[menu_button_ cell] setHoverImage:normal_];
 141   EXPECT_FALSE([menu_button_ needsDisplay]);
 142
 143   // Unhover requires a redisplay.
 144   [[menu_button_ cell] setHovered:NO];
 145   EXPECT_TRUE([menu_button_ needsDisplay]);
 146   [menu_button_ display];
 147   EXPECT_FALSE([menu_button_ needsDisplay]);
 148
 149   // Changing the image while not hovered should not require a redisplay.
 150   [[menu_button_ cell] setHoverImage:pressed_];
 151   EXPECT_FALSE([menu_button_ needsDisplay]);
 152 }
 153
 154 // Test that the mouse enter and exit is properly handled, to set hover state.
 155 TEST_F(HoverImageMenuButtonTest, SimulateMouseEnterExit) {
 156   [menu_button_ display];
 157   EXPECT_FALSE([menu_button_ needsDisplay]);
 158   EXPECT_NSEQ(normal_, [[menu_button_ cell] imageToDraw]);
 159
 160   [menu_button_ mouseEntered:nil];
 161   EXPECT_TRUE([menu_button_ needsDisplay]);
 162   EXPECT_NSEQ(hovered_, [[menu_button_ cell] imageToDraw]);
 163   [menu_button_ display];
 164   EXPECT_FALSE([menu_button_ needsDisplay]);
 165
 166   [menu_button_ mouseExited:nil];
 167   EXPECT_TRUE([menu_button_ needsDisplay]);
 168   EXPECT_NSEQ(normal_, [[menu_button_ cell] imageToDraw]);
 169   [menu_button_ display];
 170   EXPECT_FALSE([menu_button_ needsDisplay]);
 171 }
 172
 173 }  // namespace ui