[FEATHRE] attribute action improvements

- add python bindings for attribute actions
- support actions as context menu in feature form (ui)
- add action types:
  * generic: commands that should work on all platforms
  * windows, mac, unix: commands that should work and are only shown on one platform respectively
    (eg. vim on unix, notepad on windows and textmate on Mac)
  * python: python strings to be executed instead of a command
    (eg. qgis.utils.plugins['apluginname'].amethod('[%someattribute%]'))

[BUGFIXES]
- ogr support for relative filenames fixed
- relative filename support also for feature form uis


git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@12113 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

python/core/core.sip

@@ -68,6 +68,7 @@
 %Include qgssymbologyutils.sip
 %Include qgstolerance.sip
 %Include qgsuniquevaluerenderer.sip
+%Include qgsattributeaction.sip
 %Include qgsvectordataprovider.sip
 %Include qgsvectorfilewriter.sip
 %Include qgsvectorlayer.sip

python/core/qgsattributeaction.sip

@@ -0,0 +1,77 @@
+class QgsAction
+{
+%TypeHeaderCode
+#include "qgsattributeaction.h"
+%End
+
+  public:
+    enum ActionType
+    {
+      Generic,
+      GenericPython,
+      Mac,
+      Windows,
+      Unix,
+    };
+
+    QgsAction( ActionType type, QString name, QString action, bool capture );
+
+    //! The name of the action
+    QString name() const;
+
+    //! The action
+    QString action() const;
+
+    //! The action type
+    ActionType type() const;
+
+    //! Whether to capture output for display when this action is run
+    bool capture() const;
+
+    bool runable() const;
+};
+
+class QgsAttributeAction
+{
+%TypeHeaderCode
+#include "qgsattributeaction.h"
+%End
+  public:
+    QgsAttributeAction();
+
+    //! Destructor
+    virtual ~QgsAttributeAction();
+
+    //! Add an action with the given name and action details.
+    // Will happily have duplicate names and actions. If
+    // capture is true, when running the action using doAction(),
+    // any stdout from the process will be captured and displayed in a
+    // dialog box.
+    void addAction( QgsAction::ActionType type, QString name, QString action, bool capture = false );
+
+/*
+    //! Does the action using the given values. defaultValueIndex is an
+    // index into values which indicates which value in the values vector
+    // is to be used if the action has a default placeholder.
+    void doAction( int index, const QList< QPair<QString, QString> > &values,
+                   int defaultValueIndex = 0, void *executePython = 0 );
+ */
+
+    //! Removes all actions
+    void clearActions();
+
+    //! Expands the given action, replacing all %'s with the value as
+    // given.
+    static QString expandAction( QString action, const QList< QPair<QString, QString> > &values,
+                                 uint defaultValueIndex );
+
+    //! Writes the actions out in XML format
+    bool writeXML( QDomNode& layer_node, QDomDocument& doc ) const;
+
+    //! Reads the actions in in XML format
+    bool readXML( const QDomNode& layer_node );
+
+    //! interface to inherited methods from QList<QgsAction>
+    const QgsAction &at( int idx );
+    const int size();
+};

python/core/qgsvectorlayer.sip

@@ -63,7 +63,7 @@ public:
 
   QgsLabel *label();
 
-  // TODO: wrap QgsAttributeAction* actions();
+  QgsAttributeAction *actions();
 
   /** The number of features that are selected in this layer */
   int selectedFeatureCount();

src/app/qgisapp.cpp

@@ -6397,3 +6397,11 @@ void QgisApp::updateUndoActions()
   mActionUndo->setEnabled( canUndo );
   mActionRedo->setEnabled( canRedo );
 }
+
+void QgisApp::runPythonString( const QString &expr )
+{
+  if ( mPythonUtils )
+  {
+    mPythonUtils->runStringUnsafe( expr );
+  }
+}

src/app/qgisapp.h

@@ -340,6 +340,9 @@ class QgisApp : public QMainWindow
     QToolBar *pluginToolBar() { return mPluginToolBar; }
     QToolBar *helpToolBar() { return mHelpToolBar; }
 
+    //! run python
+    void runPythonString( const QString &expr );
+
   public slots:
     //! Zoom to full extent
     void zoomFull();

src/app/qgsattributeactiondialog.cpp

@@ -68,24 +68,26 @@ void QgsAttributeActionDialog::init()
   attributeActionTable->setRowCount( 0 );
 
   // Populate with our actions.
-  QgsAttributeAction::AttributeActions::const_iterator
-  iter = mActions->begin();
-  int i = 0;
-  for ( ; iter != mActions->end(); ++iter, ++i )
+  for ( int i = 0; i < mActions->size(); i++ )
   {
-    insertRow( i, iter->name(), iter->action(), iter->capture() );
+    const QgsAction action = ( *mActions )[i];
+    insertRow( i, action.type(), action.name(), action.action(), action.capture() );
   }
 }
 
-void QgsAttributeActionDialog::insertRow( int row, const QString &name, const QString &action, bool capture )
+void QgsAttributeActionDialog::insertRow( int row, QgsAction::ActionType type, const QString &name, const QString &action, bool capture )
 {
+  QTableWidgetItem* item;
   attributeActionTable->insertRow( row );
-  attributeActionTable->setItem( row, 0, new QTableWidgetItem( name ) );
-  attributeActionTable->setItem( row, 1, new QTableWidgetItem( action ) );
-  QTableWidgetItem* item = new QTableWidgetItem();
+  item = new QTableWidgetItem( actionType->itemText( type ) );
+  item->setFlags( item->flags() & ~Qt::ItemIsEditable );
+  attributeActionTable->setItem( row, 0, item );
+  attributeActionTable->setItem( row, 1, new QTableWidgetItem( name ) );
+  attributeActionTable->setItem( row, 2, new QTableWidgetItem( action ) );
+  item = new QTableWidgetItem();
   item->setFlags( item->flags() & ~( Qt::ItemIsEditable | Qt::ItemIsUserCheckable ) );
   item->setCheckState( capture ? Qt::Checked : Qt::Unchecked );
-  attributeActionTable->setItem( row, 2, item );
+  attributeActionTable->setItem( row, 3, item );
 }
 
 void QgsAttributeActionDialog::moveUp()
@@ -208,15 +210,15 @@ void QgsAttributeActionDialog::insert( int pos )
     if ( pos >= numRows )
     {
       // Expand the table to have a row with index pos
-      insertRow( pos, name, actionAction->text(), captureCB->isChecked() );
+      insertRow( pos, ( QgsAction::ActionType ) actionType->currentIndex(), name, actionAction->text(), captureCB->isChecked() );
     }
     else
     {
       // Update existing row
-      attributeActionTable->item( pos, 0 )->setText( name );
-      attributeActionTable->item( pos, 1 )->setText( actionAction->text() );
-      attributeActionTable->item( pos, 2 )->setCheckState(
-        captureCB->isChecked() ? Qt::Checked : Qt::Unchecked );
+      attributeActionTable->item( pos, 0 )->setText( actionType->currentText() );
+      attributeActionTable->item( pos, 1 )->setText( name );
+      attributeActionTable->item( pos, 2 )->setText( actionAction->text() );
+      attributeActionTable->item( pos, 3 )->setCheckState( captureCB->isChecked() ? Qt::Checked : Qt::Unchecked );
     }
   }
 }
@@ -253,12 +255,13 @@ void QgsAttributeActionDialog::apply()
   mActions->clearActions();
   for ( int i = 0; i < attributeActionTable->rowCount(); ++i )
   {
-    const QString &name = attributeActionTable->item( i, 0 )->text();
-    const QString &action = attributeActionTable->item( i, 1 )->text();
+    const QgsAction::ActionType type = ( QgsAction::ActionType ) actionType->findText( attributeActionTable->item( i, 0 )->text() );
+    const QString &name = attributeActionTable->item( i, 1 )->text();
+    const QString &action = attributeActionTable->item( i, 2 )->text();
     if ( !name.isEmpty() && !action.isEmpty() )
     {
-      QTableWidgetItem *item = attributeActionTable->item( i, 2 );
-      mActions->addAction( name, action, item->checkState() == Qt::Checked );
+      QTableWidgetItem *item = attributeActionTable->item( i, 3 );
+      mActions->addAction( type, name, action, item->checkState() == Qt::Checked );
     }
   }
 }
@@ -292,8 +295,9 @@ void QgsAttributeActionDialog::rowSelected( int row )
   if ( item )
   {
     // Only if a populated row was selected
-    actionName->setText( attributeActionTable->item( row, 0 )->text() );
-    actionAction->setText( attributeActionTable->item( row, 1 )->text() );
+    actionType->setCurrentIndex( actionType->findText( attributeActionTable->item( row, 0 )->text() ) );
+    actionName->setText( attributeActionTable->item( row, 1 )->text() );
+    actionAction->setText( attributeActionTable->item( row, 2 )->text() );
     captureCB->setChecked( item->checkState() == Qt::Checked );
   }
 }

src/app/qgsattributeactiondialog.h

@@ -25,6 +25,7 @@ back to QgsVectorLayer.
 #define QGSATTRIBUTEACTIONDIALOG_H
 
 #include "ui_qgsattributeactiondialogbase.h"
+#include "qgsattributeaction.h"
 #include "qgsfield.h"
 #include <QMap>
 
@@ -56,7 +57,7 @@ class QgsAttributeActionDialog: public QWidget, private Ui::QgsAttributeActionDi
 
   private:
 
-    void insertRow( int row, const QString &name, const QString &action, bool capture );
+    void insertRow( int row, QgsAction::ActionType type, const QString &name, const QString &action, bool capture );
     void swapRows( int row1, int row2 );
 
     void insert( int pos );
@@ -66,7 +67,7 @@ class QgsAttributeActionDialog: public QWidget, private Ui::QgsAttributeActionDi
     QString uniqueName( QString name );
 
     // Pointer to the QgsAttributeAction in the class that created us.
-    QgsAttributeAction* mActions;
+    QgsAttributeAction *mActions;
 };
 
 #endif

src/app/qgsattributedialog.h

@@ -45,6 +45,8 @@ class QgsAttributeDialog : public QObject
      */
     void restoreGeometry();
 
+    QDialog *dialog() { return mDialog; }
+
   public slots:
     /** Overloaded accept method which will write the feature field
      * values, then delegate to QDialog::accept()