diff options
author | Adam Cohen <adamcohen@google.com> | 2012-04-04 12:47:08 -0700 |
---|---|---|
committer | Adam Cohen <adamcohen@google.com> | 2012-04-09 11:41:59 -0700 |
commit | c6cc61d45836e4081920883cc4d448ccb0bb8417 (patch) | |
tree | ba762273155bf3ac209f14a75636738b162e2a6b /src/com/android/launcher2/DropTarget.java | |
parent | cffc0b9bee02d5ddd7930992adbd0c62a5ca7fc6 (diff) | |
download | android_packages_apps_Trebuchet-c6cc61d45836e4081920883cc4d448ccb0bb8417.tar.gz android_packages_apps_Trebuchet-c6cc61d45836e4081920883cc4d448ccb0bb8417.tar.bz2 android_packages_apps_Trebuchet-c6cc61d45836e4081920883cc4d448ccb0bb8417.zip |
Cleanup and refactoring in relation to drag and drop
-> folder creation, adding to folders, reordering, switching pages
-> ensuring parity of dragEnter and dragExit in cell layouts and workspace
(neither were consistently getting an even number of each)
-> actually enforced above with exceptions -- probably want to
take these out, but maybe we can leave them in as warnings
-> fixed bug with mapping points to hotseat
-> fixes other bugs with drag and drop
Change-Id: I564568f810f2784d122ec6135012b67c2e8e7551
Diffstat (limited to 'src/com/android/launcher2/DropTarget.java')
-rw-r--r-- | src/com/android/launcher2/DropTarget.java | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/com/android/launcher2/DropTarget.java b/src/com/android/launcher2/DropTarget.java index fb714c60a..397d46245 100644 --- a/src/com/android/launcher2/DropTarget.java +++ b/src/com/android/launcher2/DropTarget.java @@ -16,6 +16,7 @@ package com.android.launcher2; +import android.content.Context; import android.graphics.PointF; import android.graphics.Rect; @@ -63,6 +64,43 @@ public interface DropTarget { } } + public static class DragEnforcer implements DragController.DragListener { + int dragParity = 0; + + public DragEnforcer(Context context) { + Launcher launcher = (Launcher) context; + launcher.getDragController().addDragListener(this); + } + + void onDragEnter() { + dragParity++; + if (dragParity != 1) { + throw new RuntimeException("onDragEnter: Drag contract violated: " + dragParity); + } + } + + void onDragExit() { + dragParity--; + if (dragParity != 0) { + throw new RuntimeException("onDragExit: Drag contract violated: " + dragParity); + } + } + + @Override + public void onDragStart(DragSource source, Object info, int dragAction) { + if (dragParity != 0) { + throw new RuntimeException("onDragEnter: Drag contract violated: " + dragParity); + } + } + + @Override + public void onDragEnd() { + if (dragParity != 0) { + throw new RuntimeException("onDragExit: Drag contract violated: " + dragParity); + } + } + } + /** * Used to temporarily disable certain drop targets * |