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//
// GTMUIView+SubtreeDescription.h
//
// Copyright 2009 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
//
#import <UIKit/UIKit.h>
// This entire file, and the corresponding .m is DEBUG only.
// But you can define INCLUDE_UIVIEW_SUBTREE_DESCRIPTION to no-zero to override.
#if DEBUG || INCLUDE_UIVIEW_SUBTREE_DESCRIPTION
// Example, in debugger, pause the program, then type:
// po [[[UIApplication sharedApplication] keyWindow] subtreeDescription]
@interface UIView (SubtreeDescription)
// Returns one line, without leading indent, but with a trailing newline,
// describing the view.
// If you define a |myViewDescriptionLine| method in your own UIView classes,
// this will append that result to its description.
- (NSString *)gtm_subtreeDescriptionLine;
// For debugging. Returns a nicely indented representation of this view's
// subview hierarchy, each with frame and isHidden.
- (NSString *)subtreeDescription;
// For debugging. Returns a nicely indented representation of this view's
// layer hierarchy, with frames and isHidden.
// Requires QuartzCore to be useful, but your app will still link without it.
// TODO: should there be an analog of myViewDescriptionLine for layers?
- (NSString *)sublayersDescription;
@end
@protocol GTMUIViewSubtreeDescription
// A UIView can implement this and it can add it's own custom description
// in gtm_subtreeDescriptionLine.
- (NSString *)myViewDescriptionLine;
@end
#endif // DEBUG
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