[FEATURE]: implement possibility to place a set of default composer templates in pkgDataPath/composer_templates

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@13228 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/app/composer/qgscomposer.cpp

@@ -903,9 +903,6 @@ void QgsComposer::on_mActionLoadFromTemplate_triggered()
 
   deleteItems();
   readXML( templateDocument );
-
-  //clean up after template read (e.g. legend and map extent)
-  cleanupAfterTemplateRead();
 }
 
 void QgsComposer::on_mActionMoveItemContent_triggered()
@@ -1103,6 +1100,7 @@ void QgsComposer::readXML( const QDomDocument& doc )
     return;
   }
   readXML( composerNodeList.at( 0 ).toElement(), doc, true );
+  cleanupAfterTemplateRead();
 }
 
 void QgsComposer::readXML( const QDomElement& composerElem, const QDomDocument& doc, bool fromTemplate )

src/app/composer/qgscomposermanager.cpp

@@ -16,7 +16,10 @@
 
 #include "qgscomposermanager.h"
 #include "qgisapp.h"
+#include "qgsapplication.h"
 #include "qgscomposer.h"
+#include "qgslogger.h"
+#include <QDir>
 #include <QInputDialog>
 #include <QListWidgetItem>
 #include <QMessageBox>
@@ -48,6 +51,26 @@ void QgsComposerManager::initialize()
     item->setFlags( Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsEditable );
     mItemComposerMap.insert( item, *it );
   }
+
+  //search for default templates in $pkgDataPath/composer_templates
+  QDir defaultTemplateDir( QgsApplication::pkgDataPath() + "/composer_templates" );
+  if ( !defaultTemplateDir.exists() )
+  {
+    return;
+  }
+
+  QFileInfoList defaultTemplateFiles = defaultTemplateDir.entryInfoList( QDir::Files );
+  QFileInfoList::const_iterator fileIt = defaultTemplateFiles.constBegin();
+
+  for ( ; fileIt != defaultTemplateFiles.constEnd(); ++fileIt )
+  {
+    mDefaultTemplateMap.insert( fileIt->baseName(), fileIt->absoluteFilePath() );
+    if ( mComposerListWidget->findItems( fileIt->baseName(), Qt::MatchExactly ).size() < 1 )
+    {
+      QListWidgetItem* item = new QListWidgetItem( fileIt->baseName(), mComposerListWidget );
+      mItemComposerMap.insert( item, 0 );
+    }
+  }
 }
 
 void QgsComposerManager::on_mAddButton_clicked()
@@ -110,13 +133,48 @@ void QgsComposerManager::on_mShowPushButton_clicked()
     return;
   }
 
-  //delete composer
   QMap<QListWidgetItem*, QgsComposer*>::iterator it = mItemComposerMap.find( item );
   if ( it != mItemComposerMap.end() )
   {
-    it.value()->show();
-    it.value()->activate();
-    it.value()->stackUnder( this );
+    QgsComposer* c = 0;
+    if ( it.value() ) //a normal composer
+    {
+      c = it.value();
+      it.value()->show();
+    }
+    else //create composer from default template
+    {
+      QMap<QString, QString>::const_iterator templateIt = mDefaultTemplateMap.find( it.key()->text() );
+      if ( templateIt == mDefaultTemplateMap.constEnd() )
+      {
+        return;
+      }
+
+      QDomDocument templateDoc;
+      QFile templateFile( templateIt.value() );
+      if ( !templateFile.open( QIODevice::ReadOnly ) )
+      {
+        return;
+      }
+
+      if ( !templateDoc.setContent( &templateFile, false ) )
+      {
+        return;
+      }
+      c = mQgisApp->createNewComposer();
+      c->setTitle( it.key()->text() );
+      if ( c )
+      {
+        c->readXML( templateDoc );
+      }
+    }
+
+    if ( c )
+    {
+      c->show();
+      c->activate();
+      c->stackUnder( this );
+    }
   }
 }
 
@@ -157,3 +215,19 @@ void QgsComposerManager::on_mComposerListWidget_itemChanged( QListWidgetItem * i
     it.value()->setTitle( item->text() );
   }
 }
+
+void QgsComposerManager::on_mComposerListWidget_currentItemChanged( QListWidgetItem* current, QListWidgetItem* previous )
+{
+  if ( !current )
+  {
+    return;
+  }
+  if ( mDefaultTemplateMap.contains( current->text() ) )
+  {
+    mRenamePushButton->setEnabled( false );
+  }
+  else
+  {
+    mRenamePushButton->setEnabled( true );
+  }
+}

src/app/composer/qgscomposermanager.h

@@ -35,8 +35,12 @@ class QgsComposerManager: public QDialog, private Ui::QgsComposerManagerBase
 
   private:
     QgisApp* mQgisApp;
-    /**Stores the relation between items and composer pointers */
+    /**Stores the relation between items and composer pointers. A 0 pointer for the composer means that
+      this composer needs to be created from a default template*/
     QMap<QListWidgetItem*, QgsComposer*> mItemComposerMap;
+    /**Key: name of the default template (=filename without suffix). Value: absolute path of the template*/
+    QMap<QString, QString > mDefaultTemplateMap;
+
     /**Enters the composer instances and created the item-composer map*/
     void initialize();
 
@@ -46,6 +50,7 @@ class QgsComposerManager: public QDialog, private Ui::QgsComposerManagerBase
     void on_mShowPushButton_clicked();
     void on_mRenamePushButton_clicked();
     void on_mComposerListWidget_itemChanged( QListWidgetItem * item );
+    void on_mComposerListWidget_currentItemChanged( QListWidgetItem* current, QListWidgetItem* previous );
 };
 
 #endif // QGSCOMPOSERMANAGER_H