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Engine directory for ticket #1
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DavidWyand-GG
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303
Engine/source/platformMac/menus/menuBarMac.cpp
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303
Engine/source/platformMac/menus/menuBarMac.cpp
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//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#include "platformMac/platformMacCarb.h"
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#include "platform/menus/menuBar.h"
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#include "platform/menus/popupMenu.h"
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#include "gui/core/guiCanvas.h"
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#include "windowManager/platformWindowMgr.h"
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#include "windowManager/platformWindow.h"
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class PlatformMenuBarData
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{
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public:
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PlatformMenuBarData() :
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mMenuEventHandlerRef(NULL),
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mCommandEventHandlerRef(NULL),
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mMenuOpenCount( 0 ),
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mLastCloseTime( 0 )
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{}
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EventHandlerRef mMenuEventHandlerRef;
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EventHandlerRef mCommandEventHandlerRef;
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/// More evil hacking for OSX. There seems to be no way to disable menu shortcuts and
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/// they are automatically routed within that Cocoa thing outside of our control. Also,
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/// there's no way of telling what triggered a command event and thus no way of knowing
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/// whether it was a keyboard shortcut. Sigh.
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///
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/// So what we do here is monitor the sequence of events leading to a command event. We
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/// capture the time the last open menu was closed and then, when we receive a command
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/// event (which are dished out after the menus are closed) and keyboard accelerators are
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/// disabled, we check whether we are a certain very short time away in the event stream
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/// from the menu close event. If so, we figure the event came from clicking in a menu.
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///
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/// Utterly evil and dirty but seems to do the trick.
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U32 mMenuOpenCount;
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EventTime mLastCloseTime;
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};
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//-----------------------------------------------------------------------------
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#pragma mark -
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#pragma mark ---- menu event handler ----
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static OSStatus _OnMenuEvent(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData)
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{
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PlatformMenuBarData* mbData = ( PlatformMenuBarData* ) userData;
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MenuRef menu;
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GetEventParameter(theEvent, kEventParamDirectObject, typeMenuRef, NULL, sizeof(MenuRef), NULL, &menu);
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// Count open/close for the sake of hotkey disabling.
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UInt32 kind = GetEventKind( theEvent );
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if( kind == kEventMenuOpening )
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mbData->mMenuOpenCount ++;
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else
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{
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AssertWarn( mbData->mMenuOpenCount > 0, "Unbalanced menu open/close events in _OnMenuEvent" );
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if( mbData->mMenuOpenCount )
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mbData->mMenuOpenCount --;
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// Initial menu closed. Capture time.
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if( !mbData->mMenuOpenCount )
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mbData->mLastCloseTime = GetEventTime( theEvent );
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}
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OSStatus err = eventNotHandledErr;
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PopupMenu *torqueMenu;
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if( CountMenuItems( menu ) > 0 )
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{
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// I don't know of a way to get the Torque PopupMenu object from a Carbon MenuRef
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// other than going through its first menu item
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err = GetMenuItemProperty(menu, 1, 'GG2d', 'ownr', sizeof(PopupMenu*), NULL, &torqueMenu);
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if( err == noErr && torqueMenu != NULL )
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{
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torqueMenu->onMenuSelect();
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}
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}
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return err;
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}
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//-----------------------------------------------------------------------------
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#pragma mark -
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#pragma mark ---- menu command event handler ----
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static bool MacCarbHandleMenuCommand( void* hiCommand, PlatformMenuBarData* mbData )
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{
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HICommand *cmd = (HICommand*)hiCommand;
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if(cmd->commandID != kHICommandTorque)
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return false;
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MenuRef menu = cmd->menu.menuRef;
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MenuItemIndex item = cmd->menu.menuItemIndex;
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// Run the command handler.
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PopupMenu* torqueMenu;
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OSStatus err = GetMenuItemProperty(menu, item, 'GG2d', 'ownr', sizeof(PopupMenu*), NULL, &torqueMenu);
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AssertFatal(err == noErr, "Could not resolve the PopupMenu stored on a native menu item");
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UInt32 command;
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err = GetMenuItemRefCon(menu, item, &command);
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AssertFatal(err == noErr, "Could not find the tag of a native menu item");
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if(!torqueMenu->canHandleID(command))
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Con::errorf("menu claims it cannot handle that id. how odd.");
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// un-highlight currently selected menu
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HiliteMenu( 0 );
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return torqueMenu->handleSelect(command,NULL);
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}
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//-----------------------------------------------------------------------------
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#pragma mark -
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#pragma mark ---- Command Events ----
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static OSStatus _OnCommandEvent(EventHandlerCallRef nextHandler, EventRef theEvent, void* userData)
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{
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PlatformMenuBarData* mbData = ( PlatformMenuBarData* ) userData;
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HICommand commandStruct;
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OSStatus result = eventNotHandledErr;
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GetEventParameter(theEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof(HICommand), NULL, &commandStruct);
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// pass menu command events to a more specific handler.
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if(commandStruct.attributes & kHICommandFromMenu)
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{
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bool handleEvent = true;
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// Do menu-close check hack.
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PlatformWindow* window = PlatformWindowManager::get()->getFocusedWindow();
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if( !window || !window->getAcceleratorsEnabled() )
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{
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F32 deltaTime = mFabs( GetEventTime( theEvent ) - mbData->mLastCloseTime );
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if( deltaTime > 0.1f )
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handleEvent = false;
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}
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if( handleEvent && MacCarbHandleMenuCommand(&commandStruct, mbData) )
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result = noErr;
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}
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return result;
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}
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//-----------------------------------------------------------------------------
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// MenuBar Methods
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//-----------------------------------------------------------------------------
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void MenuBar::createPlatformPopupMenuData()
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{
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mData = new PlatformMenuBarData;
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}
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void MenuBar::deletePlatformPopupMenuData()
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{
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SAFE_DELETE(mData);
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}
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//-----------------------------------------------------------------------------
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void MenuBar::attachToCanvas(GuiCanvas *owner, S32 pos)
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{
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if(owner == NULL || isAttachedToCanvas())
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return;
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mCanvas = owner;
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// Add the items
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for(S32 i = 0;i < size();++i)
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{
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PopupMenu *mnu = dynamic_cast<PopupMenu *>(at(i));
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if(mnu == NULL)
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{
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Con::warnf("MenuBar::attachToMenuBar - Non-PopupMenu object in set");
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continue;
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}
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if(mnu->isAttachedToMenuBar())
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mnu->removeFromMenuBar();
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mnu->attachToMenuBar(owner, pos + i, mnu->getBarTitle());
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}
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// register as listener for menu opening events
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static EventTypeSpec menuEventTypes[ 2 ];
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menuEventTypes[ 0 ].eventClass = kEventClassMenu;
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menuEventTypes[ 0 ].eventKind = kEventMenuOpening;
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menuEventTypes[ 1 ].eventClass = kEventClassMenu;
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menuEventTypes[ 1 ].eventKind = kEventMenuClosed;
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EventHandlerUPP menuEventHandlerUPP;
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menuEventHandlerUPP = NewEventHandlerUPP(_OnMenuEvent);
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InstallEventHandler(GetApplicationEventTarget(), menuEventHandlerUPP, 2, menuEventTypes, mData, &mData->mMenuEventHandlerRef);
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// register as listener for process command events
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static EventTypeSpec comEventTypes[1];
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comEventTypes[0].eventClass = kEventClassCommand;
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comEventTypes[0].eventKind = kEventCommandProcess;
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EventHandlerUPP commandEventHandlerUPP;
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commandEventHandlerUPP = NewEventHandlerUPP(_OnCommandEvent);
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InstallEventHandler(GetApplicationEventTarget(), commandEventHandlerUPP, 1, comEventTypes, mData, &mData->mCommandEventHandlerRef);
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}
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//-----------------------------------------------------------------------------
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void MenuBar::removeFromCanvas()
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{
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if(mCanvas == NULL || ! isAttachedToCanvas())
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return;
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if(mData->mCommandEventHandlerRef != NULL)
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RemoveEventHandler( mData->mCommandEventHandlerRef );
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mData->mCommandEventHandlerRef = NULL;
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if(mData->mMenuEventHandlerRef != NULL)
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RemoveEventHandler( mData->mMenuEventHandlerRef );
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mData->mMenuEventHandlerRef = NULL;
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// Add the items
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for(S32 i = 0;i < size();++i)
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{
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PopupMenu *mnu = dynamic_cast<PopupMenu *>(at(i));
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if(mnu == NULL)
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{
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Con::warnf("MenuBar::removeFromMenuBar - Non-PopupMenu object in set");
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continue;
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}
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mnu->removeFromMenuBar();
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}
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mCanvas = NULL;
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}
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//-----------------------------------------------------------------------------
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void MenuBar::updateMenuBar(PopupMenu* menu)
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{
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if(! isAttachedToCanvas())
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return;
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menu->removeFromMenuBar();
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SimSet::iterator itr = find(begin(), end(), menu);
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if(itr == end())
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return;
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// Get the item currently at the position we want to add to
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S32 pos = itr - begin();
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S16 posID = 0;
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PopupMenu *nextMenu = NULL;
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for(S32 i = pos + 1; i < size(); i++)
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{
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PopupMenu *testMenu = dynamic_cast<PopupMenu *>(at(i));
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if (testMenu && testMenu->isAttachedToMenuBar())
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{
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nextMenu = testMenu;
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break;
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}
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}
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if(nextMenu)
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posID = GetMenuID(nextMenu->mData->mMenu);
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menu->attachToMenuBar(mCanvas, posID, menu->mBarTitle);
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}
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