From 25f83daf0ec9a61e85c68ef8b76474d5a7b5c42a Mon Sep 17 00:00:00 2001
From: Ingo Schommer <ingo@silverstripe.com>
Date: Fri, 10 Aug 2012 11:23:19 +0200
Subject: [PATCH] NEW Copy page to different subsite, select MasterPageID

This is also the only UI-facing way to set a master page
after the initial copy action when creating a new subsite.
Shows "edit" link when master page is already set.
---
 code/LeftAndMainSubsites.php | 15 ++++++---
 code/SiteTreeSubsites.php    | 64 +++++++++++++++++++++++++++++++++++-
 2 files changed, 73 insertions(+), 6 deletions(-)

diff --git a/code/LeftAndMainSubsites.php b/code/LeftAndMainSubsites.php
index 73c0bda..a1cf504 100644
--- a/code/LeftAndMainSubsites.php
+++ b/code/LeftAndMainSubsites.php
@@ -6,6 +6,8 @@
  */
 class LeftAndMainSubsites extends Extension {
 
+	static $allowed_actions = array('CopyToSubsite');
+
 	function init() {
 		Requirements::css('subsites/css/LeftAndMain_Subsites.css');
 		Requirements::javascript('subsites/javascript/LeftAndMain_Subsites.js');
@@ -21,7 +23,7 @@ class LeftAndMainSubsites extends Extension {
 			Subsite::changeSubsite($_REQUEST['SubsiteID']);
 		}
 	}
-	
+
 	/**
 	 * Set the title of the CMS tree
 	 */
@@ -164,8 +166,11 @@ class LeftAndMainSubsites extends Extension {
 			FormResponse::status_message('Saved, please update related pages.', 'good');
 		}
 	}
-}
-	
-	
 
-?>
+	function copytosubsite($data, $form) {
+		$page = DataObject::get_by_id('SiteTree', $data['ID']);
+		$subsite = DataObject::get_by_id('Subsite', $data['CopyToSubsiteID']);
+		$newPage = $page->duplicateToSubsite($subsite->ID, true);
+		return $this->owner->redirect(Controller::join_links($this->owner->Link('show'), $newPage->ID));
+	}
+}
\ No newline at end of file
diff --git a/code/SiteTreeSubsites.php b/code/SiteTreeSubsites.php
index 45f77b8..14d1e60 100644
--- a/code/SiteTreeSubsites.php
+++ b/code/SiteTreeSubsites.php
@@ -66,7 +66,69 @@ class SiteTreeSubsites extends SiteTreeDecorator {
 	}
 
 	function updateCMSFields(&$fields) {
-		if($this->owner->MasterPageID) $fields->insertFirst(new HeaderField('This page\'s content is copied from a master page: ' . $this->owner->MasterPage()->Title, 2));
+		$subsites = Subsite::accessible_sites("CMS_ACCESS_CMSMain");
+		$subsitesMap = array();
+		if($subsites && $subsites->Count()) {
+			$subsitesMap = $subsites->toDropdownMap('ID', 'Title');
+			unset($subsitesMap[$this->owner->SubsiteID]);
+		} 
+
+		// Master page notice
+		if($this->owner->MasterPageID) {
+			$masterPage = $this->owner->MasterPage();
+			$masterNoteField = new LiteralField(
+				'MasterLink',
+				sprintf(
+					_t(
+						'SiteTreeSubsites.MasterLinkNote',
+						'<p>This page\'s content is copied from the <a href="%s" target="_blank">%s</a> master page (<a href="%s">edit</a>)</p>'
+					),
+					$masterPage->AbsoluteLink(), 
+					$masterPage->Title,
+					Controller::join_links(
+						singleton('CMSMain')->Link('show'),
+						$masterPage->ID
+					)
+				)
+			);
+			$fields->addFieldToTab('Root.Content.Main',$masterNoteField);
+		} 
+
+		// Master page edit field (only allowed from default subsite to avoid inconsistent relationships)
+		$isDefaultSubsite = $this->owner->SubsiteID == 0 || $this->owner->Subsite()->DefaultSite;
+		if($isDefaultSubsite && $subsitesMap) {
+			$fields->addFieldToTab(
+				'Root.Content.Main',
+				new DropdownField(
+					"CopyToSubsiteID", 
+					_t('SiteTreeSubsites.CopyToSubsite', "Copy page to subsite"), 
+					$subsitesMap,
+					''
+				)
+			);
+			$fields->addFieldToTab(
+				'Root.Content.Main',
+				$copyAction = new InlineFormAction(
+					"copytosubsite", 
+					_t('SiteTreeSubsites.CopyAction', "Copy")
+				)
+			);
+			$copyAction->includeDefaultJS(false);
+		} else {
+			$defaultSubsite = DataObject::get_one('Subsite', '"DefaultSite" = 1');
+			if($defaultSubsite) {
+				$fields->addFieldToTab('Root.Content.Main',
+					$masterPageField = new SubsitesTreeDropdownField(
+						"MasterPageID", 
+						_t('VirtualPage.MasterPage', "Master page"), 
+						"SiteTree",
+						"ID",
+						"MenuTitle"
+					)
+				);
+				$masterPageField->setSubsiteID($defaultSubsite->ID);
+			}
+		}
 		
 		// replace readonly link prefix
 		$subsite = $this->owner->Subsite();