make tooltips working for list items - fix #303

src/dlangui/core/events.d

@@ -868,6 +868,12 @@ class MouseEvent {
     /// returns point for mouse cursor position
     @property Point pos() { return Point(_x, _y); }
 
+    /// returns true if no modifier flags are set
+    @property bool noModifiers() { return (_flags & (MouseFlag.Control | MouseFlag.Alt | MouseFlag.Shift)) == 0; }
+    /// returns true if any modifier flag is set
+    @property bool hasModifiers() { return !noModifiers; }
+
+
     /// Returns true for ButtonDown event when button is pressed second time in short interval after pressing first time
     @property bool doubleClick() {
         if (_action != MouseAction.ButtonDown)
@@ -1239,6 +1245,8 @@ class KeyEvent {
 
     /// returns true if no modifier flags are set
     @property bool noModifiers() { return (_flags & (KeyFlag.Control | KeyFlag.Alt | KeyFlag.Menu | KeyFlag.Shift)) == 0; }
+    /// returns true if any modifier flag is set
+    @property bool hasModifiers() { return !noModifiers; }
 
     /// create key event
     this(KeyAction action, uint keyCode, uint flags, dstring text = null) {

src/dlangui/dialogs/filedlg.d

@@ -322,6 +322,7 @@ class FileDialog : Dialog, CustomGridCellAdapter {
             btn.orientation = Orientation.Vertical;
             btn.styleId = STYLE_TRANSPARENT_BUTTON_BACKGROUND;
             btn.focusable = false;
+            btn.tooltipText = root.path.toUTF32;
             adapter.add(btn);
         }
         res.ownAdapter = adapter;

src/dlangui/widgets/lists.d

@@ -57,6 +57,11 @@ interface ListAdapter {
 
     /// called when theme is changed
     void onThemeChanged();
+
+    /// return true to receive mouse events
+    @property bool wantMouseEvents();
+    /// return true to receive keyboard events
+    @property bool wantKeyEvents();
 }
 
 /// List adapter for simple list of widget instances
@@ -122,6 +127,16 @@ class ListAdapterBase : ListAdapter {
     /// called when theme is changed
     void onThemeChanged() {
     }
+
+    /// return true to receive mouse events
+    override @property bool wantMouseEvents() {
+        return false;
+    }
+
+    /// return true to receive keyboard events
+    override  @property bool wantKeyEvents() {
+        return false;
+    }
 }
 
 /// List adapter for simple list of widget instances
@@ -176,6 +191,11 @@ class WidgetListAdapter : ListAdapterBase {
     ~this() {
         //Log.d("Destroying WidgetListAdapter");
     }
+
+    /// return true to receive mouse events
+    override @property bool wantMouseEvents() {
+        return true;
+    }
 }
 
 /** List adapter providing strings only. */
@@ -1283,6 +1303,9 @@ class ListWidget : WidgetGroup, OnScrollHandler, OnAdapterChangeHandler {
             itemrc.top += rc.top - scrollOffset.y;
             itemrc.bottom += rc.top - scrollOffset.y;
             if (itemrc.isPointInside(Point(event.x, event.y))) {
+                Widget itemWidget;
+                if (_adapter.wantMouseEvents)
+                    itemWidget = _adapter.itemWidget(i);
                 //Log.d("mouse event action=", event.action, " button=", event.button, " flags=", event.flags);
                 if ((event.flags & (MouseFlag.LButton || MouseFlag.RButton)) || _selectOnHover) {
                     if (_selectedItemIndex != i && itemEnabled(i)) {
@@ -1304,12 +1327,31 @@ class ListWidget : WidgetGroup, OnScrollHandler, OnAdapterChangeHandler {
                         }
                     }
                 }
+                if (itemWidget) {
+                    Widget oldParent = itemWidget.parent;
+                    itemWidget.parent = this;
+                    if (event.action == MouseAction.Move && event.noModifiers && itemWidget.hasTooltip) {
+                        itemWidget.scheduleTooltip(200);
+                    }
+                    //itemWidget.onMouseEvent(event);
+                    itemWidget.parent = oldParent;
+                }
                 return true;
             }
         }
         return true;
     }
-
+    /// returns true if item is child of this widget (when deepSearch == true - returns true if item is this widget or one of children inside children tree).
+    override bool isChild(Widget item, bool deepSearch = true) {
+        if (_adapter && _adapter.wantMouseEvents) {
+            for (int i = 0; i < itemCount; i++) {
+                auto itemWidget = _adapter.itemWidget(i);
+                if (itemWidget is item)
+                    return true;
+            }
+        }
+        return super.isChild(item, deepSearch);
+    }
 }
 
 class StringListWidget : ListWidget {

src/dlangui/widgets/widget.d

@@ -790,7 +790,7 @@ public:
     }
 
     /// schedule tooltip
-    protected void scheduleTooltip(long delay = 300, uint alignment = 2 /*PopupAlign.Below*/, int x = 0, int y = 0) {
+    void scheduleTooltip(long delay = 300, uint alignment = 2 /*PopupAlign.Below*/, int x = 0, int y = 0) {
         if (auto w = window)
             w.scheduleTooltip(this, delay, alignment, x, y);
     }
@@ -1253,7 +1253,7 @@ public:
                 return true;
             }
         }
-        if (event.action == MouseAction.Move && event.flags == 0 && hasTooltip) {
+        if (event.action == MouseAction.Move && !event.hasModifiers && hasTooltip) {
             scheduleTooltip(200);
         }
         if (event.action == MouseAction.ButtonDown && event.button == MouseButton.Right) {