# HG changeset patch
# User Claus Gittinger <cg@exept.de>
# Date 1571320067 -7200
# Node ID a28f8340a3eb0d3090109b398a6484df92f272c4
# Parent  fac47345f7ba51005f6fa28a9e72f06dbbaa243b
#UI_ENHANCEMENT by exept
class: ShowMeHowItWorks
class definition
added: #drag:toComponent:dropAt:show:
changed:
	#do:
	#do:from:
	#drag:toComponent:dropAt:

diff -r fac47345f7ba -r a28f8340a3eb ShowMeHowItWorks.st
--- a/ShowMeHowItWorks.st	Wed Oct 16 16:12:22 2019 +0200
+++ b/ShowMeHowItWorks.st	Thu Oct 17 15:47:47 2019 +0200
@@ -8,7 +8,7 @@
 	instanceVariableNames:'application opStream streamStack lastComponentName lastComponent
 		lastResult voice translate language verifying
 		closeApplicationWhenFinished defaultComponentWaitTime ui'
-	classVariableNames:'IntroShownCount DebugMode'
+	classVariableNames:'IntroShownCount DebugMode StartLabel'
 	poolDictionaries:''
 	category:'Interface-Help'
 !
@@ -447,10 +447,21 @@
 
     <action>
 
+    self drag:itemsIndexOrLabelOrPattern toComponent:targetComponentName dropAt:where show:nil
+!
+
+drag:itemsIndexOrLabelOrPattern toComponent:targetComponentName dropAt:where show:textWhenDroppingOrNil
+    "drag an item (by index or label) from the current treeView,
+     into another component.
+     where is one of: #top, #center or #bottom.
+     allowed after moving to:
+        aSelectionInHierarchyView
+    "    
+
+    <action>
+
     |sourceComponent targetComponent idx yPos sourcePos sourcePosOnScreen
-     targetPos targetPosOnScreen targetPosInSource|
-
-    self assert:( #(top center bottom) includes:where).
+     targetPos targetPosOnScreen targetPosInSource dNdMgr|
 
     verifying ifTrue:[^ self].
 
@@ -461,18 +472,29 @@
         sourceComponent := sourceComponent scrolledView.
     ].
 
-    (sourceComponent isKindOf:HierarchicalListView) ifTrue:[
-        where == #top ifTrue:[
-            targetPos := targetComponent topCenter. 
+    where == #topLeft ifTrue:[
+        targetPos := targetComponent topLeft + (1@1). 
+    ] ifFalse:[
+        where == #topCenter ifTrue:[
+            targetPos := targetComponent topCenter + (0@1). 
         ] ifFalse:[
             where == #center ifTrue:[
                 targetPos := targetComponent center
             ] ifFalse:[
-                where == #bottom ifTrue:[
+                where == #bottomCenter ifTrue:[
                     targetPos := targetComponent bottomCenter - (0 @ 1)
+                ] ifFalse:[
+                    where == #bottomLeft ifTrue:[
+                        targetPos := targetComponent bottomLeft + (1 @ -1)
+                    ] ifFalse:[
+                        self error:'where is this'
+                    ].
                 ].
             ].
         ].
+    ].
+
+    (sourceComponent isKindOf:HierarchicalListView) ifTrue:[
 
         itemsIndexOrLabelOrPattern isInteger ifTrue:[
             idx := itemsIndexOrLabelOrPattern
@@ -496,22 +518,19 @@
         targetPosInSource := Display translatePoint:targetPosOnScreen from:nil to:sourceComponent.
 
         sourceComponent simulateButtonPress:1 at:sourcePos sendDisplayEvent:true.
-        Delay waitForSeconds:0.5.
+        dNdMgr := sourceComponent startDragAt:sourcePos.
+
+        textWhenDroppingOrNil notNil ifTrue:[
+            self show:textWhenDroppingOrNil.
+        ].
+
+        Delay waitForSeconds:1.
         self movePointerToComponent:targetComponent offset:targetPos.
-        sourceComponent simulateButtonMotion:1 to:targetPosInSource sendDisplayEvent:false.
-        sourceComponent simulateButtonRelease:1 at:targetPosInSource sendDisplayEvent:false.
-self halt.
-        sourceComponent simulateButtonMotion:1 to:targetPosInSource sendDisplayEvent:false.
-        Delay waitForSeconds:0.5.
-        sourceComponent simulateButtonRelease:1 at:targetPosInSource sendDisplayEvent:true.
+        Delay waitForSeconds:1.
+        dNdMgr buttonMotion:1 x:targetPos x y:targetPos y view:targetComponent.
 
-"/        self movePointerToComponent:targetComponent offset:targetPos.
-"/        Delay waitForSeconds:2.
-"/        self press:1.
-"/        Delay waitForSeconds:2.
-"/        self release:1.
-"/        Delay waitForSeconds:0.5.
-        self halt.
+        sourceComponent simulateButtonRelease:1 at:targetPos sendDisplayEvent:true.
+        dNdMgr buttonRelease:1 x:targetPos x y:targetPos y view:targetComponent.
         ^ self
     ].
 
@@ -1479,10 +1498,10 @@
     "must run as a separate process;
      otherwise - if started by the app itself -
      no events will be processed while running"
-    |startLabel|
 
-    startLabel := 'start'.
-    self do:specArray from:startLabel
+    "/ StartLabel := nil.
+    "/ StartLabel := 'start'.
+    self do:specArray from:StartLabel
 
 
     "
@@ -1583,22 +1602,24 @@
      otherwise - if started by the app itself -
      no events will be processed while running"
 
-    |wasActive|
+    |wasFlyByActive|
 
-    (wasActive := ActiveHelp isActive) ifTrue:[
-        ActiveHelp stop.
+    (wasFlyByActive := FlyByHelp isSuspended) ifFalse:[
+        FlyByHelp suspend.
     ].
+
     self prepare.
 
     "/ run once in verifying mode
     [
         self verify:specArray.
     ] ensure:[
-        wasActive ifTrue:[ActiveHelp start].
+        wasFlyByActive ifTrue:[FlyByHelp resume].
     ].
 
     [
-        ActiveHelp stop.
+        FlyByHelp suspend.
+
         [
             Error handle:[:ex |
                 Dialog warn:(self class classResources 
@@ -1608,7 +1629,7 @@
                 self doStream:(specArray readStream) from:startLabelOrNil
             ].
         ] ensure:[
-            wasActive ifTrue:[ActiveHelp start].
+            wasFlyByActive ifTrue:[FlyByHelp resume].
         ].
     ] fork.