src/chrome/browser/ui/cocoa/constrained_window/constrained_window_alert.mm

   1 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/constrained_window/constrained_window_alert.h"
   6
   7 #import "base/logging.h"
   8 #import "chrome/browser/ui/chrome_style.h"
   9 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_button.h"
  10 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_control_utils.h"
  11 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_window.h"
  12 #import "chrome/browser/ui/cocoa/hover_close_button.h"
  13 #include "skia/ext/skia_utils_mac.h"
  14 #include "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"
  15 #include "ui/base/cocoa/controls/hyperlink_button_cell.h"
  16 #include "ui/base/cocoa/window_size_constants.h"
  17
  18 namespace {
  19
  20 const CGFloat kWindowMinWidth = 500;
  21 const CGFloat kButtonGap = 6;
  22
  23 }  // namespace
  24
  25 @interface ConstrainedWindowAlert ()
  26 // Position the alert buttons within the given window width.
  27 - (void)layoutButtonsWithWindowWidth:(CGFloat)windowWidth;
  28 // Resize the given text field to fit within the window and position it starting
  29 // at |yPos|. Returns the new value of yPos.
  30 - (CGFloat)layoutTextField:(NSTextField*)textField
  31                       yPos:(CGFloat)yPos
  32                windowWidth:(CGFloat)windowWidth;
  33 // If a link has been set, resizes the link to fit within the window and
  34 // position it starting at |yPos|. Returns the new value of yPos.
  35 - (CGFloat)layoutLinkAtYPos:(CGFloat)yPos
  36                 windowWidth:(CGFloat)windowWidth;
  37 // Positions the accessory view starting at yPos. Returns the new value of yPos.
  38 - (CGFloat)layoutAccessoryViewAtYPos:(CGFloat)yPos;
  39 // Update the position of the close button.
  40 - (void)layoutCloseButtonWithWindowWidth:(CGFloat)windowWidth
  41                             windowHeight:(CGFloat)windowHeight;
  42 @end
  43
  44 @implementation ConstrainedWindowAlert
  45
  46 - (id)init {
  47   if ((self = [super init])) {
  48     window_.reset([[ConstrainedWindowCustomWindow alloc]
  49         initWithContentRect:ui::kWindowSizeDeterminedLater]);
  50     NSView* contentView = [window_ contentView];
  51
  52     informativeTextField_.reset([constrained_window::CreateLabel() retain]);
  53     [contentView addSubview:informativeTextField_];
  54     messageTextField_.reset([constrained_window::CreateLabel() retain]);
  55     [contentView addSubview:messageTextField_];
  56
  57     closeButton_.reset(
  58         [[WebUIHoverCloseButton alloc] initWithFrame:NSZeroRect]);
  59     [contentView addSubview:closeButton_];
  60   }
  61   return self;
  62 }
  63
  64 - (NSString*)informativeText {
  65   return [informativeTextField_ stringValue];
  66 }
  67
  68 - (void)setInformativeText:(NSString*)string {
  69   [informativeTextField_ setAttributedStringValue:
  70       constrained_window::GetAttributedLabelString(
  71           string,
  72           chrome_style::kTextFontStyle,
  73           NSNaturalTextAlignment,
  74           NSLineBreakByWordWrapping)];
  75 }
  76
  77 - (NSString*)messageText {
  78   return [messageTextField_ stringValue];
  79 }
  80
  81 - (void)setMessageText:(NSString*)string {
  82   [messageTextField_ setAttributedStringValue:
  83       constrained_window::GetAttributedLabelString(
  84           string,
  85           chrome_style::kTitleFontStyle,
  86           NSNaturalTextAlignment,
  87           NSLineBreakByWordWrapping)];
  88 }
  89
  90 - (void)setLinkText:(NSString*)text target:(id)target action:(SEL)action {
  91   if (![text length]) {
  92     [linkView_ removeFromSuperview];
  93     linkView_.reset(nil);
  94     return;
  95   }
  96
  97   if (!linkView_.get()) {
  98     linkView_.reset(
  99         [[HyperlinkButtonCell buttonWithString:[NSString string]] retain]);
 100     [[window_ contentView] addSubview:linkView_];
 101   }
 102
 103   [linkView_ setTitle:text];
 104   [linkView_ setTarget:target];
 105   [linkView_ setAction:action];
 106 }
 107
 108 - (NSView*)accessoryView {
 109   return accessoryView_;
 110 }
 111
 112 - (void)setAccessoryView:(NSView*)accessoryView {
 113   [accessoryView_ removeFromSuperview];
 114   accessoryView_.reset([accessoryView retain]);
 115   [[window_ contentView] addSubview:accessoryView_];
 116 }
 117
 118 - (NSArray*)buttons {
 119   return buttons_;
 120 }
 121
 122 - (NSButton*)closeButton {
 123   return closeButton_;
 124 }
 125
 126 - (NSWindow*)window {
 127   return window_;
 128 }
 129
 130 - (void)addButtonWithTitle:(NSString*)title
 131              keyEquivalent:(NSString*)keyEquivalent
 132                     target:(id)target
 133                     action:(SEL)action {
 134   if (!buttons_.get())
 135     buttons_.reset([[NSMutableArray alloc] init]);
 136   base::scoped_nsobject<NSButton> button(
 137       [[ConstrainedWindowButton alloc] initWithFrame:NSZeroRect]);
 138   [button setTitle:title];
 139   [button setKeyEquivalent:keyEquivalent];
 140   [button setTarget:target];
 141   [button setAction:action];
 142   [buttons_ addObject:button];
 143   [[window_ contentView] addSubview:button];
 144 }
 145
 146 - (void)layout {
 147   // Button width.
 148   CGFloat buttonWidth = 0;
 149   for (NSButton* button in buttons_.get()) {
 150     [button sizeToFit];
 151     NSSize size = [button frame].size;
 152     buttonWidth += size.width;
 153   }
 154   if ([buttons_ count])
 155     buttonWidth += ([buttons_ count] - 1) * kButtonGap;
 156
 157   // Window width.
 158   CGFloat windowWidth = buttonWidth;
 159   if (accessoryView_.get())
 160     windowWidth = std::max(windowWidth, NSWidth([accessoryView_ frame]));
 161   windowWidth += chrome_style::kHorizontalPadding * 2;
 162   windowWidth = std::max(windowWidth, kWindowMinWidth);
 163
 164   // Layout controls.
 165   [self layoutButtonsWithWindowWidth:windowWidth];
 166   CGFloat curY = [buttons_ count] ? NSMaxY([[buttons_ lastObject] frame])
 167       : chrome_style::kClientBottomPadding;
 168   CGFloat availableMessageWidth =
 169       windowWidth - chrome_style::GetCloseButtonSize() - kButtonGap;
 170   curY = [self layoutLinkAtYPos:curY
 171                     windowWidth:availableMessageWidth];
 172   curY = [self layoutAccessoryViewAtYPos:curY];
 173   curY = [self layoutTextField:informativeTextField_
 174                           yPos:curY
 175                    windowWidth:windowWidth];
 176   curY = [self layoutTextField:messageTextField_
 177                           yPos:curY
 178                    windowWidth:availableMessageWidth];
 179
 180   CGFloat windowHeight = curY + chrome_style::kTitleTopPadding;
 181   [self layoutCloseButtonWithWindowWidth:windowWidth
 182                             windowHeight:windowHeight];
 183
 184   // Update window frame.
 185   NSRect windowFrame = NSMakeRect(0, 0, windowWidth, windowHeight);
 186   windowFrame = [window_ frameRectForContentRect:windowFrame];
 187   [window_ setFrame:windowFrame display:NO];
 188 }
 189
 190 - (void)layoutButtonsWithWindowWidth:(CGFloat)windowWidth {
 191   // Layout first 2 button right to left.
 192   CGFloat curX = windowWidth - chrome_style::kHorizontalPadding;
 193   const int buttonCount = [buttons_ count];
 194   for (int i = 0; i < std::min(2, buttonCount); ++i) {
 195     NSButton* button = [buttons_ objectAtIndex:i];
 196     NSRect rect = [button frame];
 197     rect.origin.x = curX - NSWidth(rect);
 198     rect.origin.y = chrome_style::kClientBottomPadding;
 199     [button setFrameOrigin:rect.origin];
 200     curX = NSMinX(rect) - kButtonGap;
 201   }
 202
 203   // Layout remaining buttons left to right.
 204   curX = chrome_style::kHorizontalPadding;
 205   for (int i = buttonCount - 1; i >= 2; --i) {
 206     NSButton* button = [buttons_ objectAtIndex:i];
 207     [button setFrameOrigin:
 208         NSMakePoint(curX, chrome_style::kClientBottomPadding)];
 209     curX += NSMaxX([button frame]) + kButtonGap;
 210   }
 211 }
 212
 213 - (CGFloat)layoutTextField:(NSTextField*)textField
 214                       yPos:(CGFloat)yPos
 215                windowWidth:(CGFloat)windowWidth {
 216   if (![[textField stringValue] length]) {
 217     [textField setHidden:YES];
 218     return yPos;
 219   }
 220
 221   [textField setHidden:NO];
 222   NSRect rect;
 223   rect.origin.y = yPos + chrome_style::kRowPadding;
 224   rect.origin.x = chrome_style::kHorizontalPadding;
 225   rect.size.width = windowWidth -
 226       chrome_style::kHorizontalPadding * 2;
 227   rect.size.height = 1;
 228   [textField setFrame:rect];
 229   [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:textField];
 230   return NSMaxY([textField frame]);
 231 }
 232
 233 - (CGFloat)layoutLinkAtYPos:(CGFloat)yPos
 234                 windowWidth:(CGFloat)windowWidth {
 235   if (!linkView_.get())
 236     return yPos;
 237
 238   NSRect availableBounds = NSMakeRect(
 239       0,
 240       0,
 241       windowWidth - chrome_style::kHorizontalPadding * 2,
 242       CGFLOAT_MAX);
 243   NSSize size = [[linkView_ cell] cellSizeForBounds:availableBounds];
 244
 245   NSRect rect;
 246   rect.origin.y = yPos + chrome_style::kRowPadding;
 247   rect.origin.x = chrome_style::kHorizontalPadding;
 248   rect.size = size;
 249   [linkView_ setFrame:rect];
 250   return NSMaxY([linkView_ frame]);
 251 }
 252
 253 - (CGFloat)layoutAccessoryViewAtYPos:(CGFloat)yPos {
 254   if (!accessoryView_.get())
 255     return yPos;
 256   NSRect frame = [accessoryView_ frame];
 257   frame.origin.y = yPos + chrome_style::kRowPadding;
 258   frame.origin.x = chrome_style::kHorizontalPadding;
 259   [accessoryView_ setFrameOrigin:frame.origin];
 260   return NSMaxY(frame);
 261 }
 262
 263 - (void)layoutCloseButtonWithWindowWidth:(CGFloat)windowWidth
 264                             windowHeight:(CGFloat)windowHeight {
 265   NSRect frame;
 266   frame.size.width = chrome_style::GetCloseButtonSize();
 267   frame.size.height = chrome_style::GetCloseButtonSize();
 268   frame.origin.x = windowWidth -
 269       chrome_style::kCloseButtonPadding - NSWidth(frame);
 270   frame.origin.y = windowHeight -
 271       chrome_style::kCloseButtonPadding - NSHeight(frame);
 272   [closeButton_ setFrame:frame];
 273 }
 274
 275 - (NSButton*)linkView {
 276   return linkView_;
 277 }
 278
 279 @end