Replace prompt() with jQuery UI dialog (#1485135)

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Replace prompt() with jQuery UI dialog (#1485135)
 - Fix navigation in messages search results
 - Improved handling of some malformed values encoded with quoted-printable (#1488232)
 - Add possibility to do LDAP bind before searching for bind DN

program/js/app.js

@@ -907,7 +907,7 @@ function rcube_webmail()
         if (!this.gui_objects.messageform)
           break;
 
-        if (!this.check_compose_input())
+        if (!props.nocheck && !this.check_compose_input(command))
           break;
 
         // Reset the auto-save timer
@@ -2960,7 +2960,7 @@ function rcube_webmail()
   };
 
   // checks the input fields before sending a message
-  this.check_compose_input = function()
+  this.check_compose_input = function(cmd)
   {
     // check input fields
     var ed, input_to = $("[name='_to']"),
@@ -2995,16 +2995,29 @@ function rcube_webmail()
 
     // display localized warning for missing subject
     if (input_subject.val() == '') {
-      var subject = prompt(this.get_label('nosubjectwarning'), this.get_label('nosubject'));
+      var myprompt = $('<div class="prompt">').html('<div class="message">' + this.get_label('nosubjectwarning') + '</div>').appendTo(document.body);
+      var prompt_value = $('<input>').attr('type', 'text').attr('size', 30).appendTo(myprompt).val(this.get_label('nosubject'));
 
-      // user hit cancel, so don't send
-      if (!subject && subject !== '') {
+      var buttons = {};
+      buttons[this.get_label('cancel')] = function(){
         input_subject.focus();
+        $(this).dialog('close');
+      };
+      buttons[this.get_label('sendmessage')] = function(){
+        input_subject.val(prompt_value.val());
+        $(this).dialog('close');
+        ref.command(cmd, { nocheck:true });  // repeat command which triggered this
+      };
+
+      myprompt.dialog({
+        modal: true,
+        resizable: false,
+        buttons: buttons,
+        close: function(event, ui) { $(this).remove() }
+      });
+      prompt_value.select();
       return false;
     }
-      else
-        input_subject.val((subject ? subject : this.get_label('nosubject')));
-    }
 
     // Apply spellcheck changes if spell checker is active
     this.stop_spellchecking();

program/steps/mail/compose.inc

@@ -124,7 +124,7 @@ if (!is_array($COMPOSE))
 $OUTPUT->add_label('nosubject', 'nosenderwarning', 'norecipientwarning', 'nosubjectwarning', 'cancel',
     'nobodywarning', 'notsentwarning', 'notuploadedwarning', 'savingmessage', 'sendingmessage', 
     'messagesaved', 'converting', 'editorwarning', 'searching', 'uploading', 'uploadingmany',
-    'fileuploaderror');
+    'fileuploaderror', 'sendmessage');
 
 $OUTPUT->set_env('compose_id', $COMPOSE['id']);
 
@@ -139,6 +139,9 @@ $OUTPUT->set_env('sig_above', $RCMAIL->config->get('sig_above', false));
 $OUTPUT->set_env('top_posting', $RCMAIL->config->get('top_posting', false));
 $OUTPUT->set_env('recipients_separator', trim($RCMAIL->config->get('recipients_separator', ',')));
 
+// use jquery UI for showing prompt() dialogs
+$RCMAIL->plugins->load_plugin('jqueryui');
+
 // get reference message and set compose mode
 if ($msg_uid = $COMPOSE['param']['draft_uid']) {
   $RCMAIL->imap->set_mailbox($CONFIG['drafts_mbox']);