widget/src/beos/nsChildView.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
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  14  * The Original Code is the Mozilla Browser.
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  16  * The Initial Developer of the Original Code is
  17  * Fredrik Holmqvist <thesuckiestemail@yahoo.se>.
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  36
  37 #include "nsChildView.h"
  38
  39 nsChildView::nsChildView() : nsWindow()
  40 {
  41 }
  42
  43
  44 //-------------------------------------------------------------------------
  45 //
  46 // Utility method for implementing both Create(nsIWidget ...) and
  47 // Create(nsNativeWidget...)
  48 //-------------------------------------------------------------------------
  49 nsresult nsChildView::StandardWindowCreate(nsIWidget *aParent,
  50                                         const nsRect &aRect,
  51                                         EVENT_CALLBACK aHandleEventFunction,
  52                                         nsIDeviceContext *aContext,
  53                                         nsIAppShell *aAppShell,
  54                                         nsIToolkit *aToolkit,
  55                                         nsWidgetInitData *aInitData,
  56                                         nsNativeWidget aNativeParent)
  57 {
  58
  59         NS_ASSERTION(aInitData->mWindowType == eWindowType_child
  60                 || aInitData->mWindowType == eWindowType_java
  61                 || aInitData->mWindowType == eWindowType_plugin,
  62                 "The windowtype is not handled by this class." );
  63
  64         mIsTopWidgetWindow = PR_FALSE;
  65
  66         BaseCreate(aParent, aRect, aHandleEventFunction, aContext, aAppShell,
  67                 aToolkit, aInitData);
  68
  69         mListenForResizes = aNativeParent ? PR_TRUE : aInitData->mListenForResizes;
  70
  71         // Switch to the "main gui thread" if necessary... This method must
  72         // be executed on the "gui thread"...
  73         //
  74         nsToolkit* toolkit = (nsToolkit *)mToolkit;
  75         if (toolkit && !toolkit->IsGuiThread())
  76         {
  77                 uint32 args[7];
  78                 args[0] = (uint32)aParent;
  79                 args[1] = (uint32)&aRect;
  80                 args[2] = (uint32)aHandleEventFunction;
  81                 args[3] = (uint32)aContext;
  82                 args[4] = (uint32)aAppShell;
  83                 args[5] = (uint32)aToolkit;
  84                 args[6] = (uint32)aInitData;
  85
  86                 if (nsnull != aParent)
  87                 {
  88                         // nsIWidget parent dispatch
  89                         MethodInfo info(this, this, nsSwitchToUIThread::CREATE, 7, args);
  90                         toolkit->CallMethod(&info);
  91                 }
  92                 else
  93                 {
  94                         // Native parent dispatch
  95                         MethodInfo info(this, this, nsSwitchToUIThread::CREATE_NATIVE, 7, args);
  96                         toolkit->CallMethod(&info);
  97                 }
  98                 return NS_OK;
  99         }
 100
 101         mParent = aParent;
 102         // Useful shortcut, wondering if we can use it also in GetParent() instead
 103         // nsIWidget* type mParent.
 104         mWindowParent = (nsWindow *) aParent;
 105         SetBounds(aRect);
 106
 107         //NS_NATIVE_GRAPHIC maybe?
 108         //Parent may be a BView if we embed.
 109         BView *parent= (BView *)
 110                 (aParent ? aParent->GetNativeData(NS_NATIVE_WIDGET) :  aNativeParent);
 111         //There seems to be three of these on startup,
 112         //but I believe that these are because of bugs in
 113         //other code as they existed before rewriting this
 114         //function.
 115         NS_PRECONDITION(parent, "Childviews without parents don't get added to anything.");
 116         // A childview that is never added to a parent is very strange.
 117         if (!parent)
 118                 return NS_ERROR_FAILURE;
 119
 120         mView = new nsViewBeOS(this,
 121                 BRect(aRect.x, aRect.y, aRect.x + aRect.width - 1, aRect.y + aRect.height - 1)
 122                 , "Child view", 0, B_WILL_DRAW);
 123 #if defined(BeIME)
 124         mView->SetFlags(mView->Flags() | B_INPUT_METHOD_AWARE);
 125 #endif
 126         bool mustUnlock = parent->Parent() && parent->LockLooper();
 127         parent->AddChild(mView);
 128         if (mustUnlock)
 129                 parent->UnlockLooper();
 130         DispatchStandardEvent(NS_CREATE);
 131         return NS_OK;
 132 }
 133
 134
 135 //-------------------------------------------------------------------------
 136 //
 137 // Hide or show this component
 138 //
 139 //-------------------------------------------------------------------------
 140 NS_METHOD nsChildView::Show(PRBool bState)
 141 {
 142         if (!mEnabled)
 143                 return NS_OK;
 144
 145         if (!mView || !mView->LockLooper())
 146                 return NS_OK;
 147
 148         //We need to do the IsHidden() checks
 149         //because BeOS counts no of Hide()
 150         //and Show() checks. BeBook:
 151         // For a hidden view to become visible again, the number of Hide() calls
 152         // must be matched by an equal number of Show() calls.
 153         if (PR_FALSE == bState)
 154         {
 155                 if (!mView->IsHidden())
 156                         mView->Hide();
 157         }
 158         else
 159         {
 160                 if (mView->IsHidden())
 161                         mView->Show();
 162         }
 163
 164         mView->UnlockLooper();
 165         mIsVisible = bState;
 166         return NS_OK;
 167 }
 168
 169
 170 NS_METHOD nsChildView::SetTitle(const nsAString& aTitle)
 171 {
 172         if (mView)
 173                 mView->SetName(NS_ConvertUTF16toUTF8(aTitle).get());
 174         return NS_OK;
 175 }
 176