//
//  HPTextViewInternal.m
//
//  Created by Hans Pinckaers on 29-06-10.
//
//	MIT License
//
//	Copyright (c) 2011 Hans Pinckaers
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal
//	in the Software without restriction, including without limitation the rights
//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//	copies of the Software, and to permit persons to whom the Software is
//	furnished to do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in
//	all copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//	THE SOFTWARE.

#import "HPTextViewInternal.h"

@implementation HPTextViewInternal

@synthesize placeholder;
@synthesize placeholderColor;
@synthesize displayPlaceHolder;

- (void)setText:(NSString *)text {
	BOOL originalValue = self.scrollEnabled;
	// If one of GrowingTextView's superviews is a scrollView, and self.scrollEnabled == NO,
	// setting the text programatically will cause UIKit to search upwards until it finds a scrollView with
	// scrollEnabled==yes
	// then scroll it erratically. Setting scrollEnabled temporarily to YES prevents this.
	[self setScrollEnabled:YES];
	[super setText:text];
	[self setScrollEnabled:originalValue];
}

- (void)setScrollable:(BOOL)isScrollable {
	[super setScrollEnabled:isScrollable];
}

- (void)setContentOffset:(CGPoint)s {
	if (self.tracking || self.decelerating) {
		// initiated by user...

		UIEdgeInsets insets = self.contentInset;
		insets.bottom = 0;
		insets.top = 0;
		self.contentInset = insets;

	} else {

		float bottomOffset = (self.contentSize.height - self.frame.size.height + self.contentInset.bottom);
		if (s.y < bottomOffset && self.scrollEnabled) {
			UIEdgeInsets insets = self.contentInset;
			insets.bottom = 8;
			insets.top = 0;
			self.contentInset = insets;
		}
	}

	[super setContentOffset:s];
}

- (void)setContentInset:(UIEdgeInsets)s {
	UIEdgeInsets insets = s;

	if (s.bottom > 8)
		insets.bottom = 0;
	insets.top = 0;

	[super setContentInset:insets];
}

- (void)setContentSize:(CGSize)contentSize {
	// is this an iOS5 bug? Need testing!
	if (self.contentSize.height > contentSize.height) {
		UIEdgeInsets insets = self.contentInset;
		insets.bottom = 0;
		insets.top = 0;
		self.contentInset = insets;
	}

	[super setContentSize:contentSize];
}

- (void)drawRect:(CGRect)rect {
	[super drawRect:rect];
	if (displayPlaceHolder && placeholder && placeholderColor) {
		[placeholderColor set];
		[placeholder drawInRect:CGRectMake(8.0f, 8.0f, self.frame.size.width - 16.0f, self.frame.size.height - 16.0f)
					   withFont:self.font];
	}
}

@end