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fix crash on action handling

This commit is contained in:
Vadim Lopatin 2015-01-22 17:57:52 +03:00
parent 0b3440500a
commit 173388fdff
6 changed files with 68 additions and 39 deletions
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6
examples/example1/src/example1.d
View File

@ -341,10 +341,8 @@ extern (C) int UIAppMain(string[] args) {
};
dlg.show();
return true;
} else if (window.focusedWidget)
return window.focusedWidget.handleAction(a);
else
return contentLayout.handleAction(a);
} else
return contentLayout.dispatchAction(a);
}
return false;
};

32
src/dlangui/platforms/common/platform.d
View File

@ -489,14 +489,32 @@ class Window {
}
/// dispatch action to main widget
bool dispatchAction(const Action action) {
Widget focus = focusedWidget;
// first, offer action to focused widget
if (focus && focus.handleAction(action))
bool dispatchAction(const Action action, Widget sourceWidget = null) {
// try to handle by source widget
if(sourceWidget && isChild(sourceWidget)) {
if (sourceWidget.handleAction(action))
return true;
// if not processed by focused widget, pass to main widget
if (_mainWidget !is null)
return _mainWidget.handleAction(action);
sourceWidget = sourceWidget.parent;
}
Widget focus = focusedWidget;
// then offer action to focused widget
if (focus && isChild(focus)) {
if (focus.handleAction(action))
return true;
focus = focus.parent;
}
// then offer to parent chain of source widget
while (sourceWidget && isChild(sourceWidget)) {
if (sourceWidget.handleAction(action))
return true;
sourceWidget = sourceWidget.parent;
}
// then offer to parent chain of focused widget
while (focus && isChild(focus)) {
if (focus.handleAction(action))
return true;
focus = focus.parent;
}
return false;
}

6
src/dlangui/widgets/appframe.d
View File

@ -98,4 +98,10 @@ class AppFrame : VerticalLayout, MenuItemClickHandler, MenuItemActionHandler {
res.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
return res;
}
/// override to handle specific actions
override bool handleAction(const Action a) {
return false;
}
}

30
src/dlangui/widgets/editors.d
View File

@ -1275,7 +1275,7 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
///
override bool onMenuItemAction(const Action action) {
return handleAction(action);
return dispatchAction(action);
}
/// returns true if widget can show popup (e.g. by mouse right click at point x,y)
@ -2084,16 +2084,16 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
uint keyFlags = event.flags & (MouseFlag.Shift | MouseFlag.Control | MouseFlag.Alt);
if (event.wheelDelta < 0) {
if (keyFlags == MouseFlag.Shift)
return handleAction(new Action(EditorActions.ScrollRight));
return dispatchAction(new Action(EditorActions.ScrollRight));
if (keyFlags == MouseFlag.Control)
return handleAction(new Action(EditorActions.ZoomOut));
return handleAction(new Action(EditorActions.ScrollLineDown));
return dispatchAction(new Action(EditorActions.ZoomOut));
return dispatchAction(new Action(EditorActions.ScrollLineDown));
} else if (event.wheelDelta > 0) {
if (keyFlags == MouseFlag.Shift)
return handleAction(new Action(EditorActions.ScrollLeft));
return dispatchAction(new Action(EditorActions.ScrollLeft));
if (keyFlags == MouseFlag.Control)
return handleAction(new Action(EditorActions.ZoomIn));
return handleAction(new Action(EditorActions.ScrollLineUp));
return dispatchAction(new Action(EditorActions.ZoomIn));
return dispatchAction(new Action(EditorActions.ScrollLineUp));
}
}
return super.onMouseEvent(event);
@ -2402,13 +2402,13 @@ class EditBox : EditWidgetBase {
invalidate();
}
} else if (event.action == ScrollAction.PageUp) {
handleAction(new Action(EditorActions.ScrollLeft));
dispatchAction(new Action(EditorActions.ScrollLeft));
} else if (event.action == ScrollAction.PageDown) {
handleAction(new Action(EditorActions.ScrollRight));
dispatchAction(new Action(EditorActions.ScrollRight));
} else if (event.action == ScrollAction.LineUp) {
handleAction(new Action(EditorActions.ScrollLeft));
dispatchAction(new Action(EditorActions.ScrollLeft));
} else if (event.action == ScrollAction.LineDown) {
handleAction(new Action(EditorActions.ScrollRight));
dispatchAction(new Action(EditorActions.ScrollRight));
}
return true;
}
@ -2422,13 +2422,13 @@ class EditBox : EditWidgetBase {
invalidate();
}
} else if (event.action == ScrollAction.PageUp) {
handleAction(new Action(EditorActions.ScrollPageUp));
dispatchAction(new Action(EditorActions.ScrollPageUp));
} else if (event.action == ScrollAction.PageDown) {
handleAction(new Action(EditorActions.ScrollPageDown));
dispatchAction(new Action(EditorActions.ScrollPageDown));
} else if (event.action == ScrollAction.LineUp) {
handleAction(new Action(EditorActions.ScrollLineUp));
dispatchAction(new Action(EditorActions.ScrollLineUp));
} else if (event.action == ScrollAction.LineDown) {
handleAction(new Action(EditorActions.ScrollLineDown));
dispatchAction(new Action(EditorActions.ScrollLineDown));
}
return true;
}

16
src/dlangui/widgets/grid.d
View File

@ -535,13 +535,13 @@ class GridWidgetBase : ScrollWidgetBase {
int col = colByAbsoluteX(event.position + _fullScrollableArea.left);
scrollTo(col, _scrollRow + _headerRows + _fixedRows);
} else if (event.action == ScrollAction.PageUp) {
handleAction(new Action(GridActions.ScrollPageLeft));
dispatchAction(new Action(GridActions.ScrollPageLeft));
} else if (event.action == ScrollAction.PageDown) {
handleAction(new Action(GridActions.ScrollPageRight));
dispatchAction(new Action(GridActions.ScrollPageRight));
} else if (event.action == ScrollAction.LineUp) {
handleAction(new Action(GridActions.ScrollLeft));
dispatchAction(new Action(GridActions.ScrollLeft));
} else if (event.action == ScrollAction.LineDown) {
handleAction(new Action(GridActions.ScrollRight));
dispatchAction(new Action(GridActions.ScrollRight));
}
return true;
}
@ -552,13 +552,13 @@ class GridWidgetBase : ScrollWidgetBase {
int row = rowByAbsoluteY(event.position + _fullScrollableArea.top);
scrollTo(_scrollCol + _headerCols + _fixedCols, row);
} else if (event.action == ScrollAction.PageUp) {
handleAction(new Action(GridActions.ScrollPageUp));
dispatchAction(new Action(GridActions.ScrollPageUp));
} else if (event.action == ScrollAction.PageDown) {
handleAction(new Action(GridActions.ScrollPageDown));
dispatchAction(new Action(GridActions.ScrollPageDown));
} else if (event.action == ScrollAction.LineUp) {
handleAction(new Action(GridActions.ScrollUp));
dispatchAction(new Action(GridActions.ScrollUp));
} else if (event.action == ScrollAction.LineDown) {
handleAction(new Action(GridActions.ScrollDown));
dispatchAction(new Action(GridActions.ScrollDown));
}
return true;
}

17
src/dlangui/widgets/widget.d
View File

@ -901,18 +901,25 @@ class Widget {
/// override to handle specific actions
bool handleAction(const Action a) {
if (parent) // by default, pass to parent widget
return parent.handleAction(a);
return false;
}
/// call to dispatch action
bool dispatchAction(const Action a) {
if (window)
return window.dispatchAction(a, this);
else
return handleAction(a);
}
// called to process click and notify listeners
protected bool handleClick() {
bool res = false;
if (onClickListener.assigned)
res = onClickListener(this);
else if (_action)
res = handleAction(_action);
else if (_action) {
return dispatchAction(_action);
}
return res;
}
@ -929,7 +936,7 @@ class Widget {
if (event.action == KeyAction.KeyDown) {
Action action = findKeyAction(event.keyCode, event.flags & (KeyFlag.Shift | KeyFlag.Alt | KeyFlag.Control));
if (action !is null) {
return handleAction(action);
return dispatchAction(action);
}
}
// handle focus navigation using keys