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Code Issues Packages Projects Releases Wiki Activity

TreeWidget expand/collapse notification for items - implmement #432

This commit is contained in:
Vadim Lopatin 2017-09-12 17:17:14 +03:00
parent 54356dbca1
commit f0ab7f1b45
2 changed files with 24 additions and 4 deletions
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2
src/dlangui/widgets/statusline.d
View File

@ -112,7 +112,7 @@ class StatusLine : HorizontalLayout {
void initialize() {
_defStatus = new TextWidget("STATUS_LINE_TEXT");
_defStatus.layoutWidth(FILL_PARENT);
_defStatus.text = "DLANGUI"d;
_defStatus.text = " "d;
addChild(_defStatus);
_backgroundOperationPanel = new StatusLineBackgroundOperationPanel("BACKGROUND_OP_STATUS");
addChild(_backgroundOperationPanel);

26
src/dlangui/widgets/tree.d
View File

@ -355,6 +355,10 @@ interface OnTreeStateChangeListener {
void onTreeStateChange(TreeItems source);
}
interface OnTreeExpandedStateListener {
void onTreeExpandedStateChange(TreeItems source, TreeItem item);
}
interface OnTreeSelectionChangeListener {
void onTreeItemSelected(TreeItems source, TreeItem selectedItem, bool activated);
}
@ -364,6 +368,7 @@ class TreeItems : TreeItem {
Listener!OnTreeContentChangeListener contentListener;
Listener!OnTreeStateChangeListener stateListener;
Listener!OnTreeSelectionChangeListener selectionListener;
Listener!OnTreeExpandedStateListener expandListener;
protected bool _noCollapseForSingleTopLevelItem;
@property bool noCollapseForSingleTopLevelItem() { return _noCollapseForSingleTopLevelItem; }
@ -408,13 +413,20 @@ class TreeItems : TreeItem {
}
override void toggleExpand(TreeItem item) {
bool expandChanged = false;
if (item.expanded) {
if (item.canCollapse())
if (item.canCollapse()) {
item.collapse();
} else
expandChanged = true;
}
} else {
item.expand();
expandChanged = true;
}
if (stateListener.assigned)
stateListener(this);
if (expandChanged && expandListener.assigned)
expandListener(this, item);
}
override void selectItem(TreeItem item) {
@ -695,13 +707,14 @@ class TreeItemWidget : HorizontalLayout {
/// Abstract tree widget
class TreeWidgetBase : ScrollWidget, OnTreeContentChangeListener, OnTreeStateChangeListener, OnTreeSelectionChangeListener, OnKeyHandler {
class TreeWidgetBase : ScrollWidget, OnTreeContentChangeListener, OnTreeStateChangeListener, OnTreeSelectionChangeListener, OnTreeExpandedStateListener, OnKeyHandler {
protected TreeItems _tree;
@property ref TreeItems items() { return _tree; }
Signal!OnTreeSelectionChangeListener selectionChange;
Signal!OnTreeExpandedStateListener expandedChange;
/// allows to provide individual popup menu for items
Listener!OnTreePopupMenuListener popupMenu;
@ -737,6 +750,8 @@ class TreeWidgetBase : ScrollWidget, OnTreeContentChangeListener, OnTreeStateCh
_tree.contentListener = this;
_tree.stateListener = this;
_tree.selectionListener = this;
_tree.expandListener = this;
_needUpdateWidgets = true;
_needUpdateWidgetStates = true;
acceleratorMap.add( [
@ -858,6 +873,11 @@ class TreeWidgetBase : ScrollWidget, OnTreeContentChangeListener, OnTreeStateCh
requestLayout();
}
override void onTreeExpandedStateChange(TreeItems source, TreeItem item) {
if (expandedChange.assigned)
expandedChange(source, item);
}
TreeItemWidget findItemWidget(TreeItem item) {
for (int i = 0; i < _contentWidget.childCount; i++) {
TreeItemWidget child = cast(TreeItemWidget) _contentWidget.child(i);