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Created a new class Component::SafePointer that keeps a pointer to a component and automatically nulls it if the component is deleted - this makes it a much more elegant replacement for the old ComponentDeletionWatcher class. Removed Component::getComponentUnderMouse(), which doesn't fit with multi-touch interfaces - for similar functionality, use the Desktop::getMouseInputSource() methods to find out what MouseInputSources are available, and ask them about the component they are over or dragging.

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This commit is contained in:
Julian Storer 2010-02-25 22:33:44 +00:00
parent bc5a7a6b7e
commit 5fecb8a353
49 changed files with 1251 additions and 1152 deletions
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36
src/gui/components/windows/juce_ComponentPeer.cpp
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@ -27,9 +27,8 @@
BEGIN_JUCE_NAMESPACE
#include "juce_ComponentPeer.h"
#include "../../../application/juce_Application.h"
#include "../juce_Component.h"
#include "../juce_ComponentDeletionWatcher.h"
#include "../juce_Desktop.h"
#include "../../../events/juce_MessageManager.h"
#include "../../../core/juce_Time.h"
@ -167,7 +166,7 @@ bool ComponentPeer::handleKeyPress (const int keyCode,
while (target != 0)
{
const ComponentDeletionWatcher deletionChecker (target);
const Component::SafePointer<Component> deletionChecker (target);
if (target->keyListeners_ != 0)
{
@ -175,7 +174,7 @@ bool ComponentPeer::handleKeyPress (const int keyCode,
{
keyWasUsed = ((KeyListener*) target->keyListeners_->getUnchecked(i))->keyPressed (keyInfo, target);
if (keyWasUsed || deletionChecker.hasBeenDeleted())
if (keyWasUsed || deletionChecker == 0)
return keyWasUsed;
i = jmin (i, target->keyListeners_->size());
@ -184,7 +183,7 @@ bool ComponentPeer::handleKeyPress (const int keyCode,
keyWasUsed = target->keyPressed (keyInfo);
if (keyWasUsed || deletionChecker.hasBeenDeleted())
if (keyWasUsed || deletionChecker == 0)
break;
if (keyInfo.isKeyCode (KeyPress::tabKey) && Component::getCurrentlyFocusedComponent() != 0)
@ -221,11 +220,11 @@ bool ComponentPeer::handleKeyUpOrDown (const bool isKeyDown)
while (target != 0)
{
const ComponentDeletionWatcher deletionChecker (target);
const Component::SafePointer<Component> deletionChecker (target);
keyWasUsed = target->keyStateChanged (isKeyDown);
if (keyWasUsed || deletionChecker.hasBeenDeleted())
if (keyWasUsed || deletionChecker == 0)
break;
if (target->keyListeners_ != 0)
@ -234,7 +233,7 @@ bool ComponentPeer::handleKeyUpOrDown (const bool isKeyDown)
{
keyWasUsed = ((KeyListener*) target->keyListeners_->getUnchecked(i))->keyStateChanged (isKeyDown, target);
if (keyWasUsed || deletionChecker.hasBeenDeleted())
if (keyWasUsed || deletionChecker == 0)
return keyWasUsed;
i = jmin (i, target->keyListeners_->size());
@ -295,7 +294,7 @@ void ComponentPeer::handleMovedOrResized()
if (component->flags.hasHeavyweightPeerFlag && ! nowMinimised)
{
const ComponentDeletionWatcher deletionChecker (component);
const Component::SafePointer<Component> deletionChecker (component);
const Rectangle<int> newBounds (getBounds());
const bool wasMoved = (component->getPosition() != newBounds.getPosition());
@ -310,7 +309,7 @@ void ComponentPeer::handleMovedOrResized()
component->sendMovedResizedMessages (wasMoved, wasResized);
if (deletionChecker.hasBeenDeleted())
if (deletionChecker == 0)
return;
}
}
@ -409,10 +408,8 @@ void ComponentPeer::handleFileDragMove (const StringArray& files, const Point<in
{
updateCurrentModifiers();
FileDragAndDropTarget* lastTarget = 0;
if (dragAndDropTargetComponent != 0 && ! dragAndDropTargetComponent->hasBeenDeleted())
lastTarget = const_cast <FileDragAndDropTarget*> (dynamic_cast <const FileDragAndDropTarget*> (dragAndDropTargetComponent->getComponent()));
FileDragAndDropTarget* lastTarget
= const_cast<FileDragAndDropTarget*> (dynamic_cast<const FileDragAndDropTarget*> (static_cast<Component*> (dragAndDropTargetComponent)));
FileDragAndDropTarget* newTarget = 0;
@ -432,10 +429,8 @@ void ComponentPeer::handleFileDragMove (const StringArray& files, const Point<in
if (newTarget != 0)
{
Component* const targetComp = dynamic_cast <Component*> (newTarget);
const Point<int> pos (component->relativePositionToOtherComponent (targetComp, position));
dragAndDropTargetComponent = new ComponentDeletionWatcher (dynamic_cast <Component*> (newTarget));
dragAndDropTargetComponent = dynamic_cast <Component*> (newTarget);
const Point<int> pos (component->relativePositionToOtherComponent (dragAndDropTargetComponent, position));
newTarget->fileDragEnter (files, pos.getX(), pos.getY());
}
}
@ -466,9 +461,10 @@ void ComponentPeer::handleFileDragDrop (const StringArray& files, const Point<in
{
handleFileDragMove (files, position);
if (dragAndDropTargetComponent != 0 && ! dragAndDropTargetComponent->hasBeenDeleted())
if (dragAndDropTargetComponent != 0)
{
FileDragAndDropTarget* const target = const_cast <FileDragAndDropTarget*> (dynamic_cast <const FileDragAndDropTarget*> (dragAndDropTargetComponent->getComponent()));
FileDragAndDropTarget* const target
= const_cast<FileDragAndDropTarget*> (dynamic_cast<const FileDragAndDropTarget*> (static_cast<Component*> (dragAndDropTargetComponent)));
dragAndDropTargetComponent = 0;
lastDragAndDropCompUnderMouse = 0;