see ChangeLog

Monotone-Revision: 9054022ef1ca8aeba6e34842d27d9b94ce002b89 Monotone-Author: dev-unix.inverse.qc.ca Monotone-Date: 2006-06-15T19:34:10 Monotone-Branch: ca.inverse.sogo
2026-05-21 11:25:24 +00:00 · 2006-06-15 19:34:10 +00:00
commit f18c764ffa
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+/*
+  Copyright (C) 2004 SKYRIX Software AG
+
+  This file is part of OpenGroupware.org.
+
+  OGo is free software; you can redistribute it and/or modify it under
+  the terms of the GNU Lesser General Public License as published by the
+  Free Software Foundation; either version 2, or (at your option) any
+  later version.
+
+  OGo is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+  License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with OGo; see the file COPYING.  If not, write to the
+  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+  02111-1307, USA.
+*/
+
+#include "UIxMailPartViewer.h"
+
+/*
+  UIxMailPartAlternativeViewer
+  
+  Display multipart/alternative parts. Most common application is for messages
+  which contain text/html and text/plain, but it is also used in other
+  contexts, eg in OGo appointment mails.
+  
+  TODO: We might want to give the user the possibility to access all parts
+        of the alternative set.
+*/
+
+@interface UIxMailPartAlternativeViewer : UIxMailPartViewer
+{
+  id           childInfo;
+  unsigned int childIndex;
+}
+
+@end
+
+#include "UIxMailRenderingContext.h"
+#include <UI/MailerUI/WOContext+UIxMailer.h>
+#include "common.h"
+
+@implementation UIxMailPartAlternativeViewer
+
+- (void)dealloc {
+  [self->childInfo release];
+  [super dealloc];
+}
+
+/* caches */
+
+- (void)resetBodyInfoCaches {
+  [self->childInfo release]; self->childInfo = nil;
+  self->childIndex = 0;
+  [super resetBodyInfoCaches];
+}
+
+/* part selection */
+
+- (NSArray *)childPartTypes {
+  NSMutableArray *types;
+  unsigned i, count;
+  NSArray  *childParts;
+
+  childParts = [[self bodyInfo] valueForKey:@"parts"];
+  count      = [childParts count];
+  types      = [NSMutableArray arrayWithCapacity:count];
+  
+  for (i = 0; i < count; i++) {
+    NSString *mt, *st;
+
+    mt = [[[childParts objectAtIndex:i] valueForKey:@"type"] lowercaseString];
+    st = [[[childParts objectAtIndex:i] valueForKey:@"subtype"]
+	               lowercaseString];
+    mt = [[mt stringByAppendingString:@"/"] stringByAppendingString:st];
+    [types addObject:mt ? mt : (id)[NSNull null]];
+  }
+  return types;
+}
+
+- (int)selectPartIndexFromTypes:(NSArray *)_types {
+  /* returns the index of the selected part or NSNotFound */
+  unsigned i, count;
+
+  if ((count = [_types count]) == 0)
+    return NSNotFound;
+  
+  /* we always choose text/plain if available */
+  if ((i = [_types indexOfObject:@"text/plain"]) != NSNotFound)
+    return i;
+  
+  /* then we scan for other text types and choose the first one found */
+  for (i = 0; i < count; i++) {
+    if ([(NSString *)[_types objectAtIndex:i] hasPrefix:@"text/"])
+      return i;
+  }
+  
+  /* as a fallback, we select the first available part */
+  return 0;
+}
+
+- (void)selectChildInfo {
+  unsigned idx;
+  
+  [self->childInfo release]; self->childInfo = nil;
+  self->childIndex = 0;
+  
+  idx = [self selectPartIndexFromTypes:[self childPartTypes]];
+  if (idx == NSNotFound) {
+    [self errorWithFormat:@"could not select a part of types: %@",
+            [self childPartTypes]];
+    return;
+  }
+  
+  self->childIndex = idx + 1;
+  self->childInfo  = 
+    [[[[self bodyInfo] valueForKey:@"parts"] objectAtIndex:idx] retain];
+}
+
+/* accessors */
+
+- (id)childInfo {
+  if (self->childInfo == nil)
+    [self selectChildInfo];
+  
+  return self->childInfo;
+}
+
+- (unsigned int)childIndex {
+  if (self->childIndex == 0)
+    [self selectChildInfo];
+  
+  return self->childIndex - 1;
+}
+
+- (NSString *)childPartName {
+  char buf[8];
+  sprintf(buf, "%d", [self childIndex] + 1);
+  return [NSString stringWithCString:buf];
+}
+
+- (id)childPartPath {
+  NSArray *pp;
+
+  pp = [self partPath];
+  return [pp count] > 0
+    ? [pp arrayByAddingObject:[self childPartName]]
+    : [NSArray arrayWithObject:[self childPartName]];
+}
+
+/* nested viewers */
+
+- (id)contentViewerComponent {
+  id info;
+  
+  info = [self childInfo];
+  return [[[self context] mailRenderingContext] viewerForBodyInfo:info];
+}
+
+@end /* UIxMailPartAlternativeViewer */