/*
* Copyright (C) 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#import "config.h"
#import "PopupMenu.h"
#import "EventHandler.h"
#import "SimpleFontData.h"
#import "Frame.h"
#import "FrameView.h"
#import "HTMLNames.h"
#import "HTMLOptGroupElement.h"
#import "HTMLOptionElement.h"
#import "HTMLSelectElement.h"
#import "WebCoreSystemInterface.h"
namespace WebCore {
using namespace HTMLNames;
PopupMenu::PopupMenu(PopupMenuClient* client)
: m_popupClient(client)
{
}
PopupMenu::~PopupMenu()
{
if (m_popup)
[m_popup.get() setControlView:nil];
}
void PopupMenu::clear()
{
if (m_popup)
[m_popup.get() removeAllItems];
}
void PopupMenu::populate()
{
if (m_popup)
clear();
else {
m_popup = [[NSPopUpButtonCell alloc] initTextCell:@"" pullsDown:!client()->shouldPopOver()];
[m_popup.get() release]; // release here since the RetainPtr has retained the object already
[m_popup.get() setUsesItemFromMenu:NO];
[m_popup.get() setAutoenablesItems:NO];
}
BOOL messagesEnabled = [[m_popup.get() menu] menuChangedMessagesEnabled];
[[m_popup.get() menu] setMenuChangedMessagesEnabled:NO];
// For pullDown menus the first item is hidden.
if (!client()->shouldPopOver())
[m_popup.get() addItemWithTitle:@""];
ASSERT(client());
int size = client()->listSize();
for (int i = 0; i < size; i++) {
if (client()->itemIsSeparator(i))
[[m_popup.get() menu] addItem:[NSMenuItem separatorItem]];
else {
RenderStyle* style = client()->itemStyle(i);
NSMutableDictionary* attributes = [[NSMutableDictionary alloc] init];
if (style->font() != Font())
[attributes setObject:style->font().primaryFont()->getNSFont() forKey:NSFontAttributeName];
// FIXME: Add support for styling the foreground and background colors.
// FIXME: Find a way to customize text color when an item is highlighted.
NSAttributedString* string = [[NSAttributedString alloc] initWithString:client()->itemText(i) attributes:attributes];
[attributes release];
[m_popup.get() addItemWithTitle:@""];
NSMenuItem* menuItem = [m_popup.get() lastItem];
[menuItem setAttributedTitle:string];
[menuItem setEnabled:client()->itemIsEnabled(i)];
[string release];
}
}
[[m_popup.get() menu] setMenuChangedMessagesEnabled:messagesEnabled];
}
void PopupMenu::show(const IntRect& r, FrameView* v, int index)
{
populate();
int numItems = [m_popup.get() numberOfItems];
if (numItems <= 0) {
if (client())
client()->hidePopup();
return;
}
ASSERT(numItems > index);
// Workaround for crazy bug where a selected index of -1 for a menu with only 1 item will cause a blank menu.
if (index == -1 && numItems == 2 && !client()->shouldPopOver() && ![[m_popup.get() itemAtIndex:1] isEnabled])
index = 0;
NSView* view = v->getDocumentView();
[m_popup.get() attachPopUpWithFrame:r inView:view];
[m_popup.get() selectItemAtIndex:index];
NSMenu* menu = [m_popup.get() menu];
NSPoint location;
NSFont* font = client()->clientStyle()->font().primaryFont()->getNSFont();
// These values were borrowed from AppKit to match their placement of the menu.
const int popOverHorizontalAdjust = -10;
const int popUnderHorizontalAdjust = 6;
const int popUnderVerticalAdjust = 6;
if (client()->shouldPopOver()) {
NSRect titleFrame = [m_popup.get() titleRectForBounds:r];
if (titleFrame.size.width <= 0 || titleFrame.size.height <= 0)
titleFrame = r;
float vertOffset = roundf((NSMaxY(r) - NSMaxY(titleFrame)) + NSHeight(titleFrame));
// Adjust for fonts other than the system font.
NSFont* defaultFont = [NSFont systemFontOfSize:[font pointSize]];
vertOffset += [font descender] - [defaultFont descender];
vertOffset = fminf(NSHeight(r), vertOffset);
location = NSMakePoint(NSMinX(r) + popOverHorizontalAdjust, NSMaxY(r) - vertOffset);
} else
location = NSMakePoint(NSMinX(r) + popUnderHorizontalAdjust, NSMaxY(r) + popUnderVerticalAdjust);
// Save the current event that triggered the popup, so we can clean up our event
// state after the NSMenu goes away.
RefPtr<Frame> frame = v->frame();
NSEvent* event = [frame->eventHandler()->currentNSEvent() retain];
RefPtr<PopupMenu> protector(this);
RetainPtr<NSView> dummyView(AdoptNS, [[NSView alloc] initWithFrame:r]);
[view addSubview:dummyView.get()];
location = [dummyView.get() convertPoint:location fromView:view];
frame->willPopupMenu(menu);
wkPopupMenu(menu, location, roundf(NSWidth(r)), dummyView.get(), index, font);
[m_popup.get() dismissPopUp];
[dummyView.get() removeFromSuperview];
if (client()) {
int newIndex = [m_popup.get() indexOfSelectedItem];
client()->hidePopup();
// Adjust newIndex for hidden first item.
if (!client()->shouldPopOver())
newIndex--;
if (index != newIndex && newIndex >= 0)
client()->valueChanged(newIndex);
// Give the frame a chance to fix up its event state, since the popup eats all the
// events during tracking.
frame->eventHandler()->sendFakeEventsAfterWidgetTracking(event);
}
[event release];
}
void PopupMenu::hide()
{
[m_popup.get() dismissPopUp];
}
void PopupMenu::updateFromElement()
{
}
bool PopupMenu::itemWritingDirectionIsNatural()
{
return true;
}
}