mirror of
https://github.com/moparisthebest/mailiverse
synced 2024-11-18 23:15:03 -05:00
438 lines
12 KiB
Plaintext
438 lines
12 KiB
Plaintext
/**
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* Author: Timothy Prepscius
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* License: BSD + keep my name in the code!
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*/
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#import "MailTableCell.h"
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#import "ConversationViewController.h"
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#include "mailiverse/utilities/Log.h"
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#include "MailData.h"
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@interface MailTableCell () {
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MailDataPtr data;
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bool watchingEvents;
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int observeStack;
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int kObservingContentSizeChangesContext;
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bool webViewWasInitialized;
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bool initialized;
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bool initializedDisplayPart3;
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float zoom;
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float contentHeight;
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}
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@end
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@implementation MailTableCell
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const int MailTableCell_ContentOffsetTop = 57;
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const int MailTableCell_ContentOffsetBottom = 40;
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const int MailTableCell_ContentNonContent = MailTableCell_ContentOffsetTop + MailTableCell_ContentOffsetBottom;
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@synthesize delegate;
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@synthesize fullView;
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@synthesize fullAuthors;
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@synthesize fullDate;
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@synthesize fullRecipients;
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@synthesize fullHtml;
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@synthesize fullImages;
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@synthesize fullActions;
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@synthesize draftActions;
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@synthesize touchArea;
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- (id)initWithCoder:(NSCoder *)aDecoder
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{
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self = [super initWithCoder:aDecoder];
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if (self)
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{
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self->watchingEvents = false;
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self->observeStack = 0;
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self->initialized = true;
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self->webViewWasInitialized = false;
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self->initializedDisplayPart3 = false;
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}
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return self;
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}
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- (void)dealloc
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{
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[self stopObservingContentSizeChangesInWebView];
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LogDebug(ui::MailTableCell, "dealloc");
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}
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-(BOOL)webView:(UIWebView *)_webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
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{
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LogDebug(ui::MailTableCell, "webView:shouldStartLoadWithRequest " << [[request URL] absoluteString].UTF8String << " " << (int)navigationType);
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NSString *url = [[request URL] absoluteString];
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static NSString *urlPrefix = @"native://";
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if ([url hasPrefix:urlPrefix])
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{
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[self recalculateWebViewSizeAndZoom];
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return NO;
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}
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if (navigationType == UIWebViewNavigationTypeLinkClicked)
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{
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[[UIApplication sharedApplication] openURL:[request URL]];
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return NO;
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}
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return YES;
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}
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- (void) layoutSubviews
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{
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LogDebug(ui::MailTableCell, "layoutSubviews before super: sf.size.height " << self.frame.size.height << " sf.size.width " << self.frame.size.width);
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CGRect sf = self.frame;
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CGRect vf = fullHtml.frame;
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vf.origin.y = MailTableCell_ContentOffsetTop;
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vf.size.height = sf.size.height - (MailTableCell_ContentNonContent);
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fullHtml.frame = vf;
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[super layoutSubviews];
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}
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- (void)onHeightChange:(int)height
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{
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if (height != data->height)
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{
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LogDebug(ui::MailTableCell, "propagating height change " << height);
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data->height = height;
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ConversationViewController *parent = (ConversationViewController *)delegate;
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// [parent performSelectorOnMainThread:@selector(onHeightChange:) withObject:self waitUntilDone:false];
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[parent onHeightChange:self];
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}
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}
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- (void)onContentHeightChange
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{
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LogDebug(ui::MailTableCell, "calculated final height " << (contentHeight + MailTableCell_ContentNonContent));
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[self onHeightChange:(contentHeight + MailTableCell_ContentNonContent)];
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}
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- (void)recalculateWebViewSizeAndZoom
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{
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// [self performSelectorOnMainThread:@selector(doRecalculateWebViewSizeAndZoom) withObject:nil waitUntilDone:false];
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[self doRecalculateWebViewSizeAndZoom];
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}
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- (void)doRecalculateWebViewSizeAndZoom
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{
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// have the webview calculate the new height
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CGRect webViewFrame = fullHtml.frame;
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float oldHeight= webViewFrame.size.height;
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webViewFrame.size.height = 1;
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fullHtml.frame = webViewFrame;
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CGSize fittingSize = [fullHtml sizeThatFits:CGSizeZero];
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webViewFrame.size.height = oldHeight;
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fullHtml.frame = webViewFrame;
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float height =
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fittingSize.height
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// (int)webView.scrollView.contentSize.height
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// [[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"] integerValue]
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// [[webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"] integerValue]
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// [[webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('__fakeBody__').clientHeight"] integerValue]
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;
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float width =
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getWebViewScrollView(fullHtml).contentSize.width
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// [[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth"] integerValue]
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// [[webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('__fakeBody__').clientWidth"] integerValue]
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;
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float webViewWidth = webViewFrame.size.width;
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LogDebug (ui::MailTableCell, "width " << width << " height " << height);
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if (width > webViewWidth)
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{
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zoom = webViewWidth / width;
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height = zoom * height;
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width = webViewWidth;
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LogDebug (ui::MailTableCell, "webViewDidFinishLoad zooming to " << zoom);
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}
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else
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{
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zoom = 1.0f;
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}
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contentHeight = height;
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[self hackSetWebViewZoom];
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[self onContentHeightChange];
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}
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- (void)hackClearWebView
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{
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LogDebug(ui::MailTableCell, "hackClearWebView");
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// [[NSURLCache sharedURLCache] removeAllCachedResponses];
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// [webView stringByEvaluatingJavaScriptFromString:@"var body=document.getElementsByTagName('body')[0];body.style.backgroundColor=(body.style.backgroundColor=='')?'white':'';"];
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// [webView stringByEvaluatingJavaScriptFromString:@"document.open();document.close();"];
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// [html stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML = \"\";"];
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}
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- (void)initializeDisplayPart1
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{
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fullAuthors.textColor = getColorForIndex(data->color);
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fullAuthors.text = data->author;
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fullRecipients.text = data->recipients;
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fullDate.text = data->date;
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[fullImages initToggle];
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[fullImages setState:false];
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}
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- (void)initializeDisplayPart2
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{
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NSString *string = nil;
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bool isHtml = false;
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if (data->html)
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{
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isHtml = true;
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NSString *str = data->html;
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NSRegularExpression *regex =
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[NSRegularExpression regularExpressionWithPattern:
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@"(<[\\s\\S]*?img[\\s\\S]*?)src=([\\s\\S]*?>)" options:0 error:NULL];
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string = [regex
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stringByReplacingMatchesInString:str
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options:0
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range:NSMakeRange(0, [str length])
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withTemplate:@"$1src='http://localhost/unloadable' fakesrc='http://localhost/unloadable' realsrc=$2"];
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}
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else
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if (data->text)
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{
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string = data->text;
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}
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if (string)
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{
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int deviceWidth = fullHtml.frame.size.width;
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LogDebug(ui::MailTableCell::deviceWidth, "using deviceWidth " << deviceWidth);
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bool isPhone = ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone);
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NSString *html =
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[NSString stringWithFormat:
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@"<html>"
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"<head>"
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" <meta name='viewport' id='meta_viewport' content='width=%d, user-scalable=yes'/>"
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" <style type=\"text/css\">"
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" body { padding: 0px; margin: 0px; font-family: 'helvetica'; font-size: %dpx; word-wrap:break-word; padding:0px; margin:0px; }"
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// " #__fakeBody__ { margin: 0px; padding:0px; }"
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" blockquote { display:none; margin:0; padding:0; }"
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" .__showQuote__ { background-color: #FCFCFC; display: inline-block; border: 1px dotted; }"
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" </style>"
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" <script>"
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" function __doPropagateHeightChange__() { location.href = 'native://event=onHeightChange'; }"
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" function __propagateHeightChange__() { window.setTimeout(__doPropagateHeightChange__,10); }"
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" function __enableImages__(v) {"
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" for(var i=0; i<document.images.length; ++i) {"
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" var image = document.images[i];"
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" image.src = v ? image.attributes.realsrc.nodeValue : image.attributes.fakesrc.nodeValue;"
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" }"
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" }"
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" </script>"
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"</head>"
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"<body>"
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// "<div id='__fakeBody__'>"
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"%@"
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// "</div>"
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"</body>"
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"</html>",
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(int)deviceWidth,
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isPhone ? 14 : 9,
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string
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];
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LogDebug (ui::MailTableCell::detail, html.UTF8String);
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[self hackDoWebView:html];
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// [self hackDoWebViewAfterAMoment:html];
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}
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}
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- (void)webViewDidFinishLoad:(UIWebView *)webView
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{
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LogDebug(ui::MailTableCell, "webViewDidFinishLoad");
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if (webViewWasInitialized)
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{
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[self recalculateWebViewSizeAndZoom];
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if (!initializedDisplayPart3)
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[self initializeDisplayPart3];
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}
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}
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- (void)initializeDisplayPart3
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{
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fullActions.hidden = data->draft;
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draftActions.hidden = !data->draft;
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}
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- (void)initializeDisplay
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{
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LogDebug (ui::MailTableCell, "initializeDisplay");
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if (data->isLoaded())
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{
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LogDebug (ui::MailTableCell, "data->isLoaded()");
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if (!initialized || data->dirty)
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{
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LogDebug (ui::MailTableCell, "!initialized || data->dirty");
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data->dirty = false;
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initialized = true;
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[self initializeDisplayPart1];
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[self initializeDisplayPart2];
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}
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}
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}
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- (void)onRedisplay
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{
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[self initializeDisplay];
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}
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- (IBAction)onFullImages:(id)sender
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{
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UIToggleButton *button = sender;
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int value = [button toggle] ? 1 : 0;
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[fullHtml stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"__enableImages__(%d);",value]];
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}
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- (void)onData:(MailData *)_data
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{
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[self stopObservingContentSizeChangesInWebView];
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if (data != _data)
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{
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data = _data;
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zoom = 1.0;
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contentHeight = 0;
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initialized = false;
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webViewWasInitialized = false;
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initializedDisplayPart3 = false;
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[self initializeDisplay];
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}
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// [self startObservingContentSizeChangesInWebView];
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}
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-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
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{
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UITouch *touch = [touches anyObject];
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if(touch.view == touchArea)
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{
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data->displayMode = MailData::SHORT;
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ConversationViewController *_delegate = (ConversationViewController *)delegate;
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[_delegate onDisplayModeChanged:self];
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}
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}
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#pragma mark -
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#pragma mark hacks
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- (void)hackSetWebViewZoom
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{
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UIScrollView *sv = getWebViewScrollView(fullHtml);
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sv.bounces = NO;
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LogDebug (ui::MailTableCell, "setWebView scale " << sv.zoomScale << " -> " << zoom);
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if (sv.zoomScale != zoom)
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[sv setZoomScale:zoom animated:FALSE];
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[sv setNeedsDisplay];
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[sv setNeedsLayout];
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[fullHtml setNeedsLayout];
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}
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- (void)hackDoWebViewAfterAMoment:(NSString *)html
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{
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[self performSelector:@selector(hackDoWebViewOnMainThread:) withObject:html afterDelay:5.0];
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}
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- (void)hackDoWebViewOnMainThread:(NSString *)html
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{
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[self performSelectorOnMainThread:@selector(hackDoWebView:) withObject:html waitUntilDone:NO];
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}
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- (void)hackDoWebView:(NSString *)html
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{
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webViewWasInitialized = true;
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[fullHtml loadHTMLString:html baseURL:nil];
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}
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#pragma mark scrollview events
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// http://stackoverflow.com/questions/13295762/detect-changes-to-uiwebviews-scroll-views-contentsize
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- (void)startObservingContentSizeChangesInWebView {
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if (!watchingEvents)
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[getWebViewScrollView(fullHtml) addObserver:self forKeyPath:@"contentSize" options:0 context:&kObservingContentSizeChangesContext];
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watchingEvents = true;
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}
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- (void)stopObservingContentSizeChangesInWebView {
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if (watchingEvents)
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[getWebViewScrollView(fullHtml) removeObserver:self forKeyPath:@"contentSize" context:&kObservingContentSizeChangesContext];
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watchingEvents = false;
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}
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- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
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{
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if (context == &kObservingContentSizeChangesContext) {
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UIScrollView *scrollView = object;
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NSLog(@"%@ contentSize changed to %@", scrollView, NSStringFromCGSize(scrollView.contentSize));
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if (observeStack)
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return;
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observeStack ++;
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[self onScrollHeightChange:scrollView.contentSize.height];
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observeStack --;
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} else {
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[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
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}
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}
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- (void)onScrollHeightChange:(float)height
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{
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LogDebug (ui::MailTableCell, "onScrollHeightChange " << zoom << " scale " << getWebViewScrollView(fullHtml).zoomScale << " " << height);
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CGRect webViewFrame = fullHtml.frame;
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float oldHeight= webViewFrame.size.height;
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webViewFrame.size.height = 1;
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fullHtml.frame = webViewFrame;
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CGSize fittingSize = [fullHtml sizeThatFits:CGSizeZero];
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webViewFrame.size.height = oldHeight;
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fullHtml.frame = webViewFrame;
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contentHeight = fittingSize.height;
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[self onContentHeightChange];
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}
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@end
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