1 /* 2 * Copyright (C) 2006, 2008 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #import "config.h" 21 #import "PopupMenu.h" 22 23 #import "Chrome.h" 24 #import "ChromeClient.h" 25 #import "EventHandler.h" 26 #import "Frame.h" 27 #import "FrameView.h" 28 #import "HTMLNames.h" 29 #import "HTMLOptGroupElement.h" 30 #import "HTMLOptionElement.h" 31 #import "HTMLSelectElement.h" 32 #import "Page.h" 33 #import "SimpleFontData.h" 34 #import "WebCoreSystemInterface.h" 35 36 namespace WebCore { 37 38 using namespace HTMLNames; 39 40 PopupMenu::PopupMenu(PopupMenuClient* client) 41 : m_popupClient(client) 42 { 43 } 44 45 PopupMenu::~PopupMenu() 46 { 47 if (m_popup) 48 [m_popup.get() setControlView:nil]; 49 } 50 51 void PopupMenu::clear() 52 { 53 if (m_popup) 54 [m_popup.get() removeAllItems]; 55 } 56 57 void PopupMenu::populate() 58 { 59 if (m_popup) 60 clear(); 61 else { 62 m_popup = [[NSPopUpButtonCell alloc] initTextCell:@"" pullsDown:!client()->shouldPopOver()]; 63 [m_popup.get() release]; // release here since the RetainPtr has retained the object already 64 [m_popup.get() setUsesItemFromMenu:NO]; 65 [m_popup.get() setAutoenablesItems:NO]; 66 } 67 68 BOOL messagesEnabled = [[m_popup.get() menu] menuChangedMessagesEnabled]; 69 [[m_popup.get() menu] setMenuChangedMessagesEnabled:NO]; 70 71 // For pullDown menus the first item is hidden. 72 if (!client()->shouldPopOver()) 73 [m_popup.get() addItemWithTitle:@""]; 74 75 ASSERT(client()); 76 int size = client()->listSize(); 77 78 for (int i = 0; i < size; i++) { 79 if (client()->itemIsSeparator(i)) 80 [[m_popup.get() menu] addItem:[NSMenuItem separatorItem]]; 81 else { 82 PopupMenuStyle style = client()->itemStyle(i); 83 NSMutableDictionary* attributes = [[NSMutableDictionary alloc] init]; 84 if (style.font() != Font()) { 85 NSFont *font = style.font().primaryFont()->getNSFont(); 86 if (!font) { 87 CGFloat size = style.font().primaryFont()->platformData().size(); 88 font = style.font().weight() < FontWeightBold ? [NSFont systemFontOfSize:size] : [NSFont boldSystemFontOfSize:size]; 89 } 90 [attributes setObject:font forKey:NSFontAttributeName]; 91 } 92 // FIXME: Add support for styling the foreground and background colors. 93 // FIXME: Find a way to customize text color when an item is highlighted. 94 NSAttributedString* string = [[NSAttributedString alloc] initWithString:client()->itemText(i) attributes:attributes]; 95 [attributes release]; 96 97 [m_popup.get() addItemWithTitle:@""]; 98 NSMenuItem* menuItem = [m_popup.get() lastItem]; 99 [menuItem setAttributedTitle:string]; 100 [menuItem setEnabled:client()->itemIsEnabled(i)]; 101 [menuItem setToolTip:client()->itemToolTip(i)]; 102 [string release]; 103 } 104 } 105 106 [[m_popup.get() menu] setMenuChangedMessagesEnabled:messagesEnabled]; 107 } 108 109 #if !ENABLE(EXPERIMENTAL_SINGLE_VIEW_MODE) 110 111 void PopupMenu::show(const IntRect& r, FrameView* v, int index) 112 { 113 populate(); 114 int numItems = [m_popup.get() numberOfItems]; 115 if (numItems <= 0) { 116 if (client()) 117 client()->popupDidHide(); 118 return; 119 } 120 ASSERT(numItems > index); 121 122 // Workaround for crazy bug where a selected index of -1 for a menu with only 1 item will cause a blank menu. 123 if (index == -1 && numItems == 2 && !client()->shouldPopOver() && ![[m_popup.get() itemAtIndex:1] isEnabled]) 124 index = 0; 125 126 NSView* view = v->documentView(); 127 128 [m_popup.get() attachPopUpWithFrame:r inView:view]; 129 [m_popup.get() selectItemAtIndex:index]; 130 131 NSMenu* menu = [m_popup.get() menu]; 132 133 NSPoint location; 134 NSFont* font = client()->menuStyle().font().primaryFont()->getNSFont(); 135 136 // These values were borrowed from AppKit to match their placement of the menu. 137 const int popOverHorizontalAdjust = -10; 138 const int popUnderHorizontalAdjust = 6; 139 const int popUnderVerticalAdjust = 6; 140 if (client()->shouldPopOver()) { 141 NSRect titleFrame = [m_popup.get() titleRectForBounds:r]; 142 if (titleFrame.size.width <= 0 || titleFrame.size.height <= 0) 143 titleFrame = r; 144 float vertOffset = roundf((NSMaxY(r) - NSMaxY(titleFrame)) + NSHeight(titleFrame)); 145 // Adjust for fonts other than the system font. 146 NSFont* defaultFont = [NSFont systemFontOfSize:[font pointSize]]; 147 vertOffset += [font descender] - [defaultFont descender]; 148 vertOffset = fminf(NSHeight(r), vertOffset); 149 150 location = NSMakePoint(NSMinX(r) + popOverHorizontalAdjust, NSMaxY(r) - vertOffset); 151 } else 152 location = NSMakePoint(NSMinX(r) + popUnderHorizontalAdjust, NSMaxY(r) + popUnderVerticalAdjust); 153 154 // Save the current event that triggered the popup, so we can clean up our event 155 // state after the NSMenu goes away. 156 RefPtr<Frame> frame = v->frame(); 157 NSEvent* event = [frame->eventHandler()->currentNSEvent() retain]; 158 159 RefPtr<PopupMenu> protector(this); 160 161 RetainPtr<NSView> dummyView(AdoptNS, [[NSView alloc] initWithFrame:r]); 162 [view addSubview:dummyView.get()]; 163 location = [dummyView.get() convertPoint:location fromView:view]; 164 165 if (Page* page = frame->page()) 166 page->chrome()->client()->willPopUpMenu(menu); 167 wkPopupMenu(menu, location, roundf(NSWidth(r)), dummyView.get(), index, font); 168 169 [m_popup.get() dismissPopUp]; 170 [dummyView.get() removeFromSuperview]; 171 172 if (client()) { 173 int newIndex = [m_popup.get() indexOfSelectedItem]; 174 client()->popupDidHide(); 175 176 // Adjust newIndex for hidden first item. 177 if (!client()->shouldPopOver()) 178 newIndex--; 179 180 if (index != newIndex && newIndex >= 0) 181 client()->valueChanged(newIndex); 182 183 // Give the frame a chance to fix up its event state, since the popup eats all the 184 // events during tracking. 185 frame->eventHandler()->sendFakeEventsAfterWidgetTracking(event); 186 } 187 188 [event release]; 189 } 190 191 #else 192 193 void PopupMenu::show(const IntRect&, FrameView*, int) 194 { 195 } 196 197 #endif 198 199 void PopupMenu::hide() 200 { 201 [m_popup.get() dismissPopUp]; 202 } 203 204 void PopupMenu::updateFromElement() 205 { 206 } 207 208 bool PopupMenu::itemWritingDirectionIsNatural() 209 { 210 return true; 211 } 212 213 } 214
