? watte.patch
Index: includes/ds.display.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/ds/includes/ds.display.inc,v
retrieving revision 1.1.2.37
diff -u -p -r1.1.2.37 ds.display.inc
--- includes/ds.display.inc	26 Feb 2010 21:35:15 -0000	1.1.2.37
+++ includes/ds.display.inc	27 Feb 2010 18:24:27 -0000
@@ -129,13 +129,17 @@ function ds_display_overview_form(&$form
   // Add the fields.
   ds_fields_display_form($form, $display_settings);
 
+  // Sync / copy tab.
+  ds_sync_copy_form($form, $display_settings, $build_mode, $module, $type);
+
   // Plugins.
   $plugins = TRUE;
   if (isset($api_info['plugins_exclude']) && in_array($build_mode, $api_info['plugins_exclude'])) {
     $plugins = FALSE;
   }
-  if ($plugins)
-  ds_plugins_display_form($form, $display_settings);
+  if ($plugins) {
+    ds_plugins_display_form($form, $display_settings);
+  }
 
   $form['submit'] = array(
     '#type' => 'submit',
@@ -206,6 +210,53 @@ function ds_fields_display_form(&$form, 
 }
 
 /**
+ * Add the sync / copy tab to the display overview form.
+ *
+ * @param $form The display form.
+ * @param array $display_settings Current display settings.
+ * @param array $current_build_mode Current build mode.
+ * @param string $module The current module.
+ * @param string $type_name The name of the type.
+ */
+function ds_sync_copy_form(&$form, $display_settings, $current_build_mode, $module, $type_name) {
+  $build_modes = array();
+  $all_build_modes = ds_get_build_modes($module);
+  $exclude_build_modes = variable_get($module .'_buildmodes_exclude', array());
+
+  foreach ($all_build_modes as $key => $build_mode) {
+    $excluded = (isset($exclude_build_modes[$type_name][$key]) && $exclude_build_modes[$type_name][$key] == TRUE) ? TRUE : FALSE;
+    if ($excluded || $key == $current_build_mode) {
+      continue;
+    }
+    $build_modes[$key] = $build_mode['title'];
+  }
+
+  if (!empty($build_modes)) {
+    $form['sync_copy'] = array(
+      '#type' => 'fieldset',
+      '#description' => t('Copy once or always sync display and plugin settings with other build modes. Syncing options are not saved bi-directional.<br />Watch out when copying field settings to another build mode which has a different set of regions as you can loose some fields for display. A typical example is RSS which only has one region (middle).'),
+    );
+
+    $form['sync_copy']['copy'] = array(
+      '#title' => t('Copy'),
+      '#type' => 'checkboxes',
+      '#options' => $build_modes,
+      '#prefix' => '<div style="float: left; margin-right: 30px;">',
+      '#suffix' => '</div>',
+    );
+
+    $form['sync_copy']['sync'] = array(
+      '#title' => t('Synchronize'),
+      '#type' => 'checkboxes',
+      '#options' => $build_modes,
+      '#default_value' => isset($display_settings[$current_build_mode]['sync']) ? $display_settings[$current_build_mode]['sync'] : array(),
+      '#prefix' => '<div style="float: left;">',
+      '#suffix' => '</div>',
+    );
+  }
+}
+
+/**
  * Add plugins to display overview form.
  *
  * @param array $form The display form.
@@ -261,14 +312,19 @@ function ds_display_overview_form_submit
     }
   }
 
-  // Plugins
-  if ($form['#plugins'] == TRUE)
-  ds_plugins_display_submit($form, $form_state, $display_settings);
+
+  // Plugins.
+  if ($form['#plugins'] == TRUE) {
+    ds_plugins_display_submit($form, $form_state, $display_settings);
+  }
 
   // Status.
   $status = ($form['#status'] == DS_SETTINGS_DEFAULT) ? DS_SETTINGS_OVERRIDDEN : $form['#status'];
   $display_settings[$build_mode]['status'] = $status;
 
+  // Sync / copy tab.
+  ds_sync_copy_form_submit($form, $form_state, $display_settings);
+
   // Save all these settings.
   variable_set($module .'_display_settings_'. $type, $display_settings);
 
@@ -276,6 +332,58 @@ function ds_display_overview_form_submit
 }
 
 /**
+ * Copy / sync settings.
+ *
+ * @param array $form The display form.
+ * @param array $form_state The submitted values of the form.
+ * @param array $display_settings Current display settings being saved.
+ */
+function ds_sync_copy_form_submit($form, $form_state, &$display_settings) {
+  $sync_copy = _ds_get_sync_copy($form, $form_state);
+  if (!empty($sync_copy)) {
+    $current_build_mode = $form['#build_mode'];
+    foreach ($sync_copy['copy'] as $key => $value) {
+      if ($key === $value || $sync_copy['sync'][$key] === $key) {
+
+        // Copy.
+        $display_settings[$key] = $display_settings[$current_build_mode];
+
+        // Keep in sync ?
+        if (isset($sync_copy['sync'][$key])) {
+          $display_settings[$current_build_mode]['sync'][$key] = $key;
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Helper function to get build modes which need to be synced / copied.
+ */
+function _ds_get_sync_copy($form, $form_state) {
+  static $checked = FALSE;
+  static $sync_copy = array();
+  if (isset($form_state['values']['sync_copy']) && $checked == FALSE) {
+    $checked = TRUE;
+    $current_build_mode = $form['#build_mode'];
+    $values = $form_state['values']['sync_copy'];
+    foreach ($values['copy'] as $key => $value) {
+      if ($key === $value || $values['sync'][$key] === $key) {
+
+        // Copy.
+        $sync_copy['copy'][$key] = $key;
+
+        // Keep in sync ?
+        if ($values['sync'][$key] === $key) {
+          $sync_copy['sync'][$key] = $key;
+        }
+      }
+    }
+  }
+  return $sync_copy;
+}
+
+/**
  * Save plugins settings.
  *
  * @param array $form The display form.
Index: theme/ds-display-overview-form.tpl.php
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/ds/theme/ds-display-overview-form.tpl.php,v
retrieving revision 1.1.2.12
diff -u -p -r1.1.2.12 ds-display-overview-form.tpl.php
--- theme/ds-display-overview-form.tpl.php	29 Jan 2010 14:22:40 -0000	1.1.2.12
+++ theme/ds-display-overview-form.tpl.php	27 Feb 2010 18:24:27 -0000
@@ -16,15 +16,18 @@
 if ($rows): ?>
 
 <div id="ds-display-content">
-  <?php if (!empty($plugins_tabs)): ?>
-    <div id="ds-tabs">
-      <div id="field-tab" class="tab selected"><a href="javascript:;" onClick="Drupal.DisplaySuite.toggleDisplayTab('field-tab'); return false;"><?php print t('Fields'); ?></a></div>
+  <div id="ds-tabs">
+    <div id="field-tab" class="tab selected"><a href="javascript:;" onClick="Drupal.DisplaySuite.toggleDisplayTab('field-tab'); return false;"><?php print t('Fields'); ?></a></div>
+    <?php if ($sync_copy_tab): ?>
+      <div id="sync-copy-tab" class="tab"><a href="javascript:;" onClick="Drupal.DisplaySuite.toggleDisplayTab('sync-copy-tab'); return false;"><?php print t('Sync / copy'); ?></a></div>
+    <?php endif; ?>
+    <?php if (!empty($plugins_tabs)): ?>
       <?php foreach ($plugins_tabs as $key => $title): ?>
       <div id="<?php print $key; ?>-tab" class="tab"><a href="javascript:;" onClick="Drupal.DisplaySuite.toggleDisplayTab('<?php print $key; ?>-tab'); return false;"><?php print $title; ?></a></div>
       <?php endforeach; ?>
-    </div>
-    <div style="clear: both"></div>
-  <?php endif; ?>
+    <?php endif; ?>
+  </div>
+  <div style="clear: both"></div>
 
   <div id="field-content" class="ds-display">
 
@@ -70,6 +73,9 @@ if ($rows): ?>
       </tbody>
     </table>
   </div>
+  <?php if ($sync_copy_tab): ?>
+    <div id="sync-copy-content" class="ds-hidden"><?php print $sync_copy_tab; ?></div>
+  <?php endif; ?>
   <?php if (!empty($plugins_tabs)): ?>
     <?php foreach ($plugins_content as $key => $form): ?>
       <div id="<?php print $key; ?>-content" class="ds-hidden"><?php print $form; ?></div>
Index: theme/theme.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/ds/theme/theme.inc,v
retrieving revision 1.1.2.27
diff -u -p -r1.1.2.27 theme.inc
--- theme/theme.inc	24 Feb 2010 19:55:23 -0000	1.1.2.27
+++ theme/theme.inc	27 Feb 2010 18:24:27 -0000
@@ -201,6 +201,12 @@ function template_preprocess_ds_display_
     drupal_add_tabledrag('fields', 'order', 'sibling', 'field-weight', 'field-weight-'. $region);
   }
 
+  // Sync / copy tab.
+  $vars['sync_copy_tab'] = '';
+  if (isset($form['sync_copy'])) {
+    $vars['sync_copy_tab'] = drupal_render($form['sync_copy']);
+  }
+
   // Plugins available.
   $vars['plugins_tabs'] = array();
   $vars['plugins_content'] = '';