Gallery: Update edit-mode-applicavilities even if it's a instant auto fix, and update them on undo/…

ui/file_manager/gallery/js/image_editor/image_editor.js

Index: ui/file_manager/gallery/js/image_editor/image_editor.js
diff --git a/ui/file_manager/gallery/js/image_editor/image_editor.js b/ui/file_manager/gallery/js/image_editor/image_editor.js
index 9040fe6926ceb02bf292f2fce0999e9bcdcff47e..636b3d9857afc6fb063c6578c093d3139fe11786 100644
--- a/ui/file_manager/gallery/js/image_editor/image_editor.js
+++ b/ui/file_manager/gallery/js/image_editor/image_editor.js
@@ -323,6 +323,7 @@ ImageEditor.prototype.updateUndoRedo = function() {
   var canRedo = this.commandQueue_ && this.commandQueue_.canRedo();
   ImageUtil.setAttribute(this.undoButton_, 'disabled', !canUndo);
   ImageUtil.setAttribute(this.redoButton_, 'disabled', !canRedo);
+  this.calculateModeApplicativity_();
 };
 
 /**
@@ -635,6 +636,7 @@ ImageEditor.prototype.setUpMode_ = function(mode) {
 
   this.currentMode_.setUp();
 
+  this.calculateModeApplicativity_();

[yawano, 2016/03/07 11:16:18]

setUpMode_ is called when user has clicked each mode (e.g. AutoFix, Crop). We
need to disable each mode if the image is not applicable to it. i.e. We need to
call calculateModeApplicativity_ when user has entered to edit mode.

[ryoh, 2016/03/07 11:55:09]

That's right!
I introduce new callback, ImageEditor.prototype.onStartEditing, and call that
when user start editing image.

   if (this.currentMode_.instant) {  // Instant tool.
     this.leaveModeInternal_(true, false /* not to switch mode */);
     return;
@@ -645,7 +647,6 @@ ImageEditor.prototype.setUpMode_ = function(mode) {
   this.modeToolbar_.clear();
   this.currentMode_.createTools(this.modeToolbar_);
   this.modeToolbar_.show(true);
-  this.calculateModeApplicativity_();
 };
 
 /**