got the strings for a dropdown widget (finally. only took me 4 years)

dropdown.go

@@ -156,12 +156,29 @@ func (w *guiWidget) dropdownClicked(mouseW, mouseH int) string {
 }
 
 func dropdownUnclicked(mouseX, mouseH int) {
-	log.Log(GOCUI, "dropdownUnclicked() mouseup: got inside me.dropdown handler? wxh =", mouseX, mouseH)
+	var d *guiWidget
+
+	// log.Log(GOCUI, "dropdownUnclicked() mouseup: got inside me.dropdown handler? wxh =", mouseX, mouseH)
 	if me.dropdownV == nil {
-		log.Log(GOCUI, "mouseUp() dropdownV = nil", mouseX, mouseH)
+		log.Log(GOCUI, "mouseUp() dropdownV = nil. you don't have a fake dropdown window to make visible", mouseX, mouseH)
 		return
 	}
 	tk := me.dropdownV
 	log.Log(GOCUI, fmt.Sprintf("dropdownUnclicked at apparently (w=%d h=%d)", mouseX, mouseH))
 	log.Log(GOCUI, "dropdownUnclicked() find out what the string is here", mouseX, mouseH, tk.gocuiSize.h1)
+
+	rootW := me.treeRoot.TK.(*guiWidget)
+	// examine everything under X & Y on the screen)
+	for i, w := range findByXY(rootW, mouseX, mouseH) {
+		log.Log(GOCUI, "dropdownUnclicked()", i, w.WidgetType)
+		if w.WidgetType == widget.Dropdown {
+			d = w
+			break
+		}
+	}
+	if d == nil {
+		log.Log(GOCUI, fmt.Sprintf("dropdownUnclicked() there was no dropdown widget at (w=%d h=%d)", mouseX, mouseH))
+		return
+	}
+	log.Log(GOCUI, "dropdownUnclicked()", d.node.Strings(), "end")
 }

eventMouseClick.go

@@ -160,84 +160,3 @@ func click(g *gocui.Gui, v *gocui.View) error {
 	log.Log(GOCUI, "click() END gocui name:", v.Name())
 	return nil
 }
-
-func findUnderMouse() *guiWidget {
-	var widgets []*guiWidget
-	var f func(w *guiWidget)
-	w, h := me.baseGui.MousePosition()
-
-	// find buttons that are below where the mouse button click
-	f = func(widget *guiWidget) {
-		// ignore widgets that are not visible
-		if widget.Visible() {
-			if (widget.gocuiSize.w0 <= w) && (w <= widget.gocuiSize.w1) &&
-				(widget.gocuiSize.h0 <= h) && (h <= widget.gocuiSize.h1) {
-				widgets = append(widgets, widget)
-			}
-		}
-
-		for _, child := range widget.children {
-			f(child)
-		}
-	}
-	rootW := me.treeRoot.TK.(*guiWidget)
-	f(rootW)
-
-	// search through all the widgets that were below the mouse click
-	var found *guiWidget
-	for _, w := range widgets {
-		// prioritize window buttons. This means if some code covers
-		// up the window widgets, then it will ignore everything else
-		// and allow the user (hopefully) to redraw or switch windows
-		// TODO: display the window widgets on top
-		if w.WidgetType == widget.Window {
-			return w
-		}
-	}
-
-	// return anything else that is interactive
-	for _, w := range widgets {
-		if w.WidgetType == widget.Button {
-			return w
-		}
-		if w.WidgetType == widget.Combobox {
-			return w
-		}
-		if w.WidgetType == widget.Checkbox {
-			return w
-		}
-		w.showWidgetPlacement("findUnderMouse() found something unknown")
-		found = w
-	}
-	// maybe something else was found
-	return found
-}
-
-// find the widget under the mouse click
-func ctrlDown(g *gocui.Gui, v *gocui.View) error {
-	var found *guiWidget
-	// var widgets []*node
-	// var f func (n *node)
-	found = findUnderMouse()
-	if me.ctrlDown == nil {
-		setupCtrlDownWidget()
-
-		var tk *guiWidget
-		tk = me.ctrlDown.TK.(*guiWidget)
-		tk.labelN = found.String()
-		tk.cuiName = "ctrlDown"
-		// me.ctrlDown.parent = me.rootNode
-	}
-	var tk *guiWidget
-	tk = me.ctrlDown.TK.(*guiWidget)
-	if found == nil {
-		found = me.treeRoot.TK.(*guiWidget)
-	}
-	tk.labelN = found.String()
-	newR := found.realGocuiSize()
-	tk.gocuiSize.w0 = newR.w0
-	tk.gocuiSize.h0 = newR.h0
-	tk.gocuiSize.w1 = newR.w1
-	tk.gocuiSize.h1 = newR.h1
-	return nil
-}

find.go

@@ -0,0 +1,96 @@
+package main
+
+import (
+	"github.com/awesome-gocui/gocui"
+	"go.wit.com/widget"
+)
+
+// returns the widget under the location on the screen
+func findByXY(widget *guiWidget, w int, h int) []*guiWidget {
+	var widgets []*guiWidget
+
+	if !widget.Visible() {
+		// ignore widgets that are not visible
+	} else {
+
+		// check the location to see if this is under (W,H)
+		// if it is, return this widget
+		if (widget.gocuiSize.w0 <= w) && (w <= widget.gocuiSize.w1) &&
+			(widget.gocuiSize.h0 <= h) && (h <= widget.gocuiSize.h1) {
+			widgets = append(widgets, widget)
+			// log.Log(GOCUI, "findByXY() found", widget.WidgetType, w, h)
+		}
+	}
+
+	// search through the children widgets in the binary tree
+	for _, child := range widget.children {
+		widgets = append(widgets, findByXY(child, w, h)...)
+	}
+
+	return widgets
+}
+
+func findUnderMouse() *guiWidget {
+	w, h := me.baseGui.MousePosition()
+
+	rootW := me.treeRoot.TK.(*guiWidget)
+	widgets := findByXY(rootW, w, h)
+
+	// search through all the widgets that were below the mouse click
+	var found *guiWidget
+	for _, w := range widgets {
+		// prioritize window buttons. This means if some code covers
+		// up the window widgets, then it will ignore everything else
+		// and allow the user (hopefully) to redraw or switch windows
+		// TODO: display the window widgets on top
+		if w.WidgetType == widget.Window {
+			return w
+		}
+	}
+
+	// return anything else that is interactive
+	for _, w := range widgets {
+		if w.WidgetType == widget.Button {
+			return w
+		}
+		if w.WidgetType == widget.Combobox {
+			return w
+		}
+		if w.WidgetType == widget.Checkbox {
+			return w
+		}
+		w.showWidgetPlacement("findUnderMouse() found something unknown")
+		found = w
+	}
+	// maybe something else was found
+	return found
+}
+
+// find the widget under the mouse click
+func ctrlDown(g *gocui.Gui, v *gocui.View) error {
+	var found *guiWidget
+	// var widgets []*node
+	// var f func (n *node)
+	found = findUnderMouse()
+	if me.ctrlDown == nil {
+		setupCtrlDownWidget()
+
+		var tk *guiWidget
+		tk = me.ctrlDown.TK.(*guiWidget)
+		tk.labelN = found.String()
+		tk.cuiName = "ctrlDown"
+		// me.ctrlDown.parent = me.rootNode
+	}
+	var tk *guiWidget
+	tk = me.ctrlDown.TK.(*guiWidget)
+	if found == nil {
+		found = me.treeRoot.TK.(*guiWidget)
+	}
+	tk.labelN = found.String()
+	newR := found.realGocuiSize()
+	tk.gocuiSize.w0 = newR.w0
+	tk.gocuiSize.h0 = newR.h0
+	tk.gocuiSize.w1 = newR.w1
+	tk.gocuiSize.h1 = newR.h1
+	return nil
+}

help.go

@@ -14,7 +14,7 @@ import (
 
 var helpText []string = []string{"KEYBINDINGS",
 	"",
-	"?: toggle helps",
+	"?: toggle zhelp",
 	"d: toggle debugging",
 	"r: redraw widgets",
 	"s/h: show/hide all widgets",