[processing] Port map layer selection combobox widget to c++

And: - fix enable state of selected features only after changing between map layers with/without selections - fix state of selected features only when running an algorithm from the history list, e.g. respect original setting for selected features only (or not) - ensure no duplicate changed signals are sent, and correctly emit changed signals in all applicable circumstances - handle drag and dropped layers from browser panel (UX fix) - soak with unit tests
qgis · Jun 15, 2019 · fbd243b · fbd243b
1 parent 9d82273
commit fbd243b
Show file tree

Hide file tree

Showing 10 changed files with 1,110 additions and 234 deletions.
diff --git a/python/gui/auto_generated/processing/qgsprocessingmaplayercombobox.sip.in b/python/gui/auto_generated/processing/qgsprocessingmaplayercombobox.sip.in
@@ -0,0 +1,111 @@
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/processing/qgsprocessingmaplayercombobox.h                   *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/
+
+
+
+
+
+
+class QgsProcessingMapLayerComboBox : QWidget
+{
+%Docstring
+Processing map layer combo box.
+
+.. warning::
+
+   Not part of stable API and may change in future QGIS releases.
+
+.. versionadded:: 3.8
+%End
+
+%TypeHeaderCode
+#include "qgsprocessingmaplayercombobox.h"
+%End
+  public:
+
+    QgsProcessingMapLayerComboBox( QgsProcessingParameterDefinition *parameter, QWidget *parent = 0 );
+%Docstring
+Constructor for QgsProcessingMapLayerComboBox, with the specified ``parameter`` definition.
+%End
+
+    void setLayer( QgsMapLayer *layer );
+%Docstring
+Sets the combo box to the specified ``layer``, if ``layer`` is compatible with the
+widget's parameter definition.
+%End
+
+    QgsMapLayer *currentLayer();
+%Docstring
+Returns the current layer selected in the combobox, or ``None`` if the selection cannot
+be represented as a map layer.
+
+.. warning::
+
+   Prefer calling value() instead, as it correctly encapsulates all valid
+   values which can be represented by the widget.
+
+.. seealso:: :py:func:`currentText`
+%End
+
+    QString currentText();
+%Docstring
+Returns the current text of the selected item in the combobox.
+
+.. warning::
+
+   Prefer calling value() instead, as it correctly encapsulates all valid
+   values which can be represented by the widget.
+
+.. seealso:: :py:func:`currentLayer`
+%End
+
+    void setValue( const QVariant &value, QgsProcessingContext &context );
+%Docstring
+Sets the ``value`` shown in the widget.
+
+.. seealso:: :py:func:`value`
+%End
+
+    QVariant value() const;
+%Docstring
+Returns the current value of the widget.
+
+.. seealso:: :py:func:`setValue`
+%End
+
+  signals:
+
+    void valueChanged();
+%Docstring
+Emitted whenever the value is changed in the widget.
+%End
+
+    void triggerFileSelection();
+%Docstring
+Emitted when the widget has triggered a file selection operation (to be
+handled in Python for now).
+%End
+
+  protected:
+
+    virtual void dragEnterEvent( QDragEnterEvent *event );
+
+    virtual void dragLeaveEvent( QDragLeaveEvent *event );
+
+    virtual void dropEvent( QDropEvent *event );
+
+
+};
+
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/processing/qgsprocessingmaplayercombobox.h                   *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/
diff --git a/python/gui/gui_auto.sip b/python/gui/gui_auto.sip
@@ -330,6 +330,7 @@
 %Include auto_generated/locator/qgslocatorwidget.sip
 %Include auto_generated/processing/qgsprocessingalgorithmconfigurationwidget.sip
 %Include auto_generated/processing/qgsprocessingalgorithmdialogbase.sip
+%Include auto_generated/processing/qgsprocessingmaplayercombobox.sip
 %Include auto_generated/processing/qgsprocessingmodelerparameterwidget.sip
 %Include auto_generated/processing/qgsprocessingmultipleselectiondialog.sip
 %Include auto_generated/processing/qgsprocessingrecentalgorithmlog.sip