select value for classification in attribute dialog from unique value renderer classes

git-svn-id: http://svn.osgeo.org/qgis/trunk@8776 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

src/app/qgsattributedialog.cpp

@@ -19,26 +19,33 @@
 #include "qgsfield.h"
 #include "qgslogger.h"
 
+#include "qgsvectorlayer.h"
+#include "qgsvectordataprovider.h"
+#include "qgsuniquevaluerenderer.h"
+#include "qgssymbol.h"
+
 #include <QTableWidgetItem>
 #include <QSettings>
 #include <QLineEdit>
-#include <QSpinBox>
+#include <QComboBox>
 #include <QLabel>
-#include <QDoubleSpinBox>
 #include <QFrame>
 #include <QScrollArea>
 
-QgsAttributeDialog::QgsAttributeDialog(
-    QgsFieldMap theFieldMap, QgsFeature * thepFeature)
+QgsAttributeDialog::QgsAttributeDialog(QgsVectorLayer *vl, QgsFeature * thepFeature)
   : QDialog(),
     mSettingsPath("/Windows/AttributeDialog/"),
-    mFieldMap(theFieldMap),
-    mpFeature(thepFeature)
+    mpFeature(thepFeature),
+    mLayer(vl)
 {
-
   setupUi(this);
-  if (mpFeature==NULL) return;
-  if (mFieldMap.isEmpty()) return;
+  if (mpFeature==NULL || vl->getDataProvider()==NULL )
+    return;
+
+  const QgsFieldMap &theFieldMap = vl->getDataProvider()->fields();
+
+  if (theFieldMap.isEmpty()) return;
+
   QgsAttributeMap myAttributes = mpFeature->attributeMap();
   //
   //Set up dynamic inside a scroll box
@@ -58,35 +65,89 @@ QgsAttributeDialog::QgsAttributeDialog(
   mypScrollArea->setWidgetResizable( true );
   QGridLayout * mypInnerLayout = new QGridLayout(mypInnerFrame);
 
+
+  int classificationField = -1;
+  QStringList values;
+
+  const QgsUniqueValueRenderer *uvr = dynamic_cast<const QgsUniqueValueRenderer *>( mLayer->renderer() );
+  if( uvr )
+  {
+    classificationField = uvr->classificationField();
+
+    const QList<QgsSymbol *> symbols = uvr->symbols();
+
+    for(int i=0; i<symbols.size(); i++)
+    {
+      values.append( symbols[i]->lowerValue() );
+    }
+  }
+
   int index=0;
   for (QgsAttributeMap::const_iterator it = myAttributes.begin(); 
       it != myAttributes.end(); 
       ++it)
   {
-    QString myFieldName = mFieldMap[it.key()].name();
+    QString myFieldName = theFieldMap[it.key()].name();
+    int myFieldType = theFieldMap[it.key()].type();
     QLabel * mypLabel = new QLabel();
     mypInnerLayout->addWidget(mypLabel,index,0);
     QVariant myFieldValue = it.value();
-    QLineEdit * mypLineEdit = new QLineEdit();
-    //the provider may have provided a default value so use it
-    mypLineEdit->setText(myFieldValue.toString());
-    if( mFieldMap[it.key()].type()==QVariant::Int )
+
+    QWidget *myWidget;
+    if(classificationField!=it.key())
+    {
+      QLineEdit *le = new QLineEdit();
+
+      //the provider may have provided a default value so use it
+      le->setText(myFieldValue.toString());
+
+      if( myFieldType==QVariant::Int )
+      {
+        le->setValidator( new QIntValidator(le) );
+      }
+      else if( myFieldType==QVariant::Double )
+      {
+        le->setValidator( new QIntValidator(le) );
+      }
+
+      myWidget = le;
+    }
+    else
+    {
+      QComboBox *cb = new QComboBox();
+      cb->addItems(values);
+      cb->setEditable(true);
+
+      //the provider may have provided a default value so use it
+      cb->setEditText(myFieldValue.toString());
+
+      if( myFieldType==QVariant::Int ) {
+        cb->setValidator( new QIntValidator(cb) );
+      }
+      else if( myFieldType==QVariant::Double )
+      {
+        cb->setValidator( new QIntValidator(cb) );
+      }
+
+      myWidget = cb;
+    }
+
+    if( myFieldType==QVariant::Int )
     {
-      mypLineEdit->setValidator( new QIntValidator(mypLineEdit) );
       mypLabel->setText(myFieldName + tr(" (int)"));
     }
-    else if( mFieldMap[it.key()].type()==QVariant::Double )
+    else if( myFieldType==QVariant::Double )
     {
-      mypLineEdit->setValidator( new QDoubleValidator(mypLineEdit) );
       mypLabel->setText(myFieldName + tr(" (dbl)"));
     }
     else //string
     {
       //any special behaviour for string goes here
       mypLabel->setText(myFieldName + tr(" (txt)"));
     }
-    mypInnerLayout->addWidget(mypLineEdit,index,1);
-    mpWidgets << mypLineEdit;
+
+    mypInnerLayout->addWidget(myWidget, index, 1);
+    mpWidgets << myWidget;
     ++index;
   }
   restoreGeometry();
@@ -107,12 +168,26 @@ void QgsAttributeDialog::accept()
       it != myAttributes.end(); 
       ++it)
   {
+    const QgsFieldMap &theFieldMap = mLayer->getDataProvider()->fields();
+
     //Q_ASSERT(myIndex <= mpWidgets.size());
-    QString myFieldName = mFieldMap[it.key()].name();
+    QString myFieldName = theFieldMap[it.key()].name();
     bool myFlag=false;
-    QString myFieldValue = 
-      dynamic_cast<QLineEdit *>(mpWidgets.value(myIndex))->text();
-    switch( mFieldMap[it.key()].type() )
+    QString myFieldValue;
+
+    QLineEdit *le = dynamic_cast<QLineEdit *>(mpWidgets.value(myIndex));
+    if(le)
+    {
+      myFieldValue = le->text();
+    }
+
+    QComboBox *cb = dynamic_cast<QComboBox *>(mpWidgets.value(myIndex));
+    if(cb)
+    {
+      myFieldValue = cb->currentText();
+    }
+
+    switch( theFieldMap[it.key()].type() )
     {
       case QVariant::Int:
         {

src/app/qgsattributedialog.h

@@ -27,14 +27,14 @@ class QDialog;
 class QgsFeature;
 class QLayout;
 class QgsField;
-typedef QMap<int, QgsField> QgsFieldMap;
+class QgsVectorLayer;
 
 class QgsAttributeDialog: public QDialog, private Ui::QgsAttributeDialogBase
 {
   Q_OBJECT;
 
   public:
-  QgsAttributeDialog(const QgsFieldMap thepFieldMap, QgsFeature * thepFeature);
+  QgsAttributeDialog(QgsVectorLayer *vl, QgsFeature * thepFeature);
   ~QgsAttributeDialog();
 
   /** Overloaded accept method which will write the feature field 
@@ -53,7 +53,7 @@ class QgsAttributeDialog: public QDialog, private Ui::QgsAttributeDialogBase
   private:
   QString mSettingsPath;
   QList<QWidget *> mpWidgets;
-  QgsFieldMap mFieldMap;
+  QgsVectorLayer *mLayer;
   QgsFeature *  mpFeature;
 };
 

src/app/qgsmaptooladdfeature.cpp

@@ -175,7 +175,7 @@ void QgsMapToolAddFeature::canvasReleaseEvent(QMouseEvent * e)
     }
 
 	  // show the dialog to enter attribute values
-    QgsAttributeDialog * mypDialog = new QgsAttributeDialog(fields,f );
+    QgsAttributeDialog * mypDialog = new QgsAttributeDialog( vlayer, f );
 	  if (mypDialog->exec())
     {
       qDebug("Adding feature to layer");
@@ -436,7 +436,7 @@ void QgsMapToolAddFeature::canvasReleaseEvent(QMouseEvent * e)
 	      f->addAttribute(it.key(), provider->getDefaultValue(it.key()));
 	    }
 
-    QgsAttributeDialog * mypDialog = new QgsAttributeDialog(fields,f );
+    QgsAttributeDialog * mypDialog = new QgsAttributeDialog( vlayer, f );
 	  if (mypDialog->exec())
     {
       if(vlayer->addFeature(*f))