Merge branch 'htmlmail'

* htmlmail: (26 commits)
  changed internal Mailer members from private to protected
  made it possible to disable HTML mails in the config
  removed commented code left from the quoted_printable days
  add missing table tags for HTML diff mails
  fixed subscriber mail signatures
  use real HRs in HTML mails
  Add various headers to the mails FS#2247. pull request #83 closed
  removed footer image from HTML mails
  use inlinestyles for diffs in HTML mails
  fixed signature stripping
  fixed mailprefix handling
  fixed missing replacement for HTML notify mails
  allow image embeds in HTML mail templates
  Added HTML wrapper for mails
  allow non-txt extensions when accessing locales
  added Mailer class to autoloader
  Replaced mail_send calls with new Mailer class
  Make use of new Mailer class in notify()
  Copy all text replacements to HTML replacements in Mailer
  Added setBody() to Mailer class
  ...

1 files changed, 47 insertions, 14 deletions

diff --git a/inc/DifferenceEngine.php b/inc/DifferenceEngine.php
index 01926b20c..0a7ce8e7c 100644
--- a/inc/DifferenceEngine.php
+++ b/inc/DifferenceEngine.php
@@ -818,6 +818,39 @@ class DiffFormatter {
     }
 }
 
+/**
+ * Utilityclass for styling HTML formatted diffs
+ *
+ * Depends on global var $DIFF_INLINESTYLES, if true some minimal predefined
+ * inline styles are used. Useful for HTML mails and RSS feeds
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+class HTMLDiff {
+    /**
+     * Holds the style names and basic CSS
+     */
+    static public $styles = array(
+            'diff-addedline'    => 'background-color: #ddffdd;',
+            'diff-deletedline'  => 'background-color: #ffdddd;',
+            'diff-context'      => 'background-color: #f5f5f5;',
+            'diff-mark'         => 'color: #ff0000;',
+        );
+
+    /**
+     * Return a class or style parameter
+     */
+    static function css($classname){
+        global $DIFF_INLINESTYLES;
+
+        if($DIFF_INLINESTYLES){
+            if(!isset(self::$styles[$classname])) return '';
+            return 'style="'.self::$styles[$classname].'"';
+        }else{
+            return 'class="'.$classname.'"';
+        }
+    }
+}
 
 /**
  *  Additions by Axel Boldt follow, partly taken from diff.php, phpwiki-1.3.3
@@ -838,11 +871,11 @@ class _HWLDF_WordAccumulator {
     function _flushGroup($new_tag) {
         if ($this->_group !== '') {
             if ($this->_tag == 'mark')
-                $this->_line .= '<strong>'.$this->_group.'</strong>';
+                $this->_line .= '<strong '.HTMLDiff::css('diff-mark').'>'.$this->_group.'</strong>';
             elseif ($this->_tag == 'add')
-                $this->_line .= '<span class="diff-addedline">'.$this->_group.'</span>';
+                $this->_line .= '<span '.HTMLDiff::css('diff-addedline').'>'.$this->_group.'</span>';
             elseif ($this->_tag == 'del')
-                $this->_line .= '<span class="diff-deletedline"><del>'.$this->_group.'</del></span>';
+                $this->_line .= '<span '.HTMLDiff::css('diff-deletedline').'><del>'.$this->_group.'</del></span>';
             else
                 $this->_line .= $this->_group;
         }
@@ -1020,8 +1053,8 @@ class TableDiffFormatter extends DiffFormatter {
         global $lang;
         $l1 = $lang['line'].' '.$xbeg;
         $l2 = $lang['line'].' '.$ybeg;
-        $r = '<tr><td class="diff-blockheader" colspan="2">'.$l1.":</td>\n".
-             '<td class="diff-blockheader" colspan="2">'.$l2.":</td>\n".
+        $r = '<tr><td '.HTMLDiff::css('diff-blockheader').' colspan="2">'.$l1.":</td>\n".
+             '<td '.HTMLDiff::css('diff-blockheader').' colspan="2">'.$l2.":</td>\n".
              "</tr>\n";
         return $r;
     }
@@ -1037,11 +1070,11 @@ class TableDiffFormatter extends DiffFormatter {
     }
 
     function addedLine($line) {
-        return '<td>+</td><td class="diff-addedline">' .  $line.'</td>';
+        return '<td>+</td><td '.HTMLDiff::css('diff-addedline').'>' .  $line.'</td>';
     }
 
     function deletedLine($line) {
-        return '<td>-</td><td class="diff-deletedline">' .  $line.'</td>';
+        return '<td>-</td><td '.HTMLDiff::css('diff-deletedline').'>' .  $line.'</td>';
     }
 
     function emptyLine() {
@@ -1049,7 +1082,7 @@ class TableDiffFormatter extends DiffFormatter {
     }
 
     function contextLine($line) {
-        return '<td> </td><td class="diff-context">'.$line.'</td>';
+        return '<td> </td><td '.HTMLDiff::css('diff-context').'>'.$line.'</td>';
     }
 
     function _added($lines) {
@@ -1115,9 +1148,9 @@ class InlineDiffFormatter extends DiffFormatter {
             $xbeg .= "," . $xlen;
         if ($ylen != 1)
             $ybeg .= "," . $ylen;
-        $r = '<tr><td colspan="'.$this->colspan.'" class="diff-blockheader">@@ '.$lang['line']." -$xbeg +$ybeg @@";
-        $r .= ' <span class="diff-deletedline"><del>'.$lang['deleted'].'</del></span>';
-        $r .= ' <span class="diff-addedline">'.$lang['created'].'</span>';
+        $r = '<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-blockheader').'>@@ '.$lang['line']." -$xbeg +$ybeg @@";
+        $r .= ' <span '.HTMLDiff::css('diff-deletedline').'><del>'.$lang['deleted'].'</del></span>';
+        $r .= ' <span '.HTMLDiff::css('diff-addedline').'>'.$lang['created'].'</span>';
         $r .= "</td></tr>\n";
         return $r;
     }
@@ -1134,19 +1167,19 @@ class InlineDiffFormatter extends DiffFormatter {
 
     function _added($lines) {
         foreach ($lines as $line) {
-            print('<tr><td colspan="'.$this->colspan.'" class="diff-addedline">'. $line . "</td></tr>\n");
+            print('<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-addedline').'>'. $line . "</td></tr>\n");
         }
     }
 
     function _deleted($lines) {
         foreach ($lines as $line) {
-            print('<tr><td colspan="'.$this->colspan.'" class="diff-deletedline"><del>' . $line . "</del></td></tr>\n");
+            print('<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-deletedline').'><del>' . $line . "</del></td></tr>\n");
         }
     }
 
     function _context($lines) {
         foreach ($lines as $line) {
-            print('<tr><td colspan="'.$this->colspan.'" class="diff-context">'.$line."</td></tr>\n");
+            print('<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-context').'>'.$line."</td></tr>\n");
         }
     }