[FEATURE] Add a search widget wrapper for datetime widgets

python/gui/editorwidgets/qgsdatetimesearchwidgetwrapper.sip

@@ -0,0 +1,32 @@
+/**
+ * Wraps a date time search widget.
+ */
+class QgsDateTimeSearchWidgetWrapper : QgsSearchWidgetWrapper
+{
+%TypeHeaderCode
+#include <qgsdatetimesearchwidgetwrapper.h>
+%End
+  public:
+
+  public:
+    explicit QgsDateTimeSearchWidgetWrapper( QgsVectorLayer* vl, int fieldIdx, QWidget* parent /TransferThis/ = nullptr );
+    bool applyDirectly();
+    QString expression();
+    bool valid() const;
+    QVariant value() const;
+    FilterFlags supportedFlags() const;
+    FilterFlags defaultFlags() const;
+    virtual QString createExpression( FilterFlags flags ) const;
+
+  public slots:
+
+    virtual void clearWidget();
+    virtual void setEnabled( bool enabled );
+
+  protected:
+    QWidget* createWidget( QWidget* parent );
+    void initWidget( QWidget* editor );
+
+  protected slots:
+    void setExpression( QString exp );
+};

python/gui/gui.sip

@@ -254,6 +254,7 @@
 %Include editorwidgets/core/qgswidgetwrapper.sip
 %Include editorwidgets/qgscheckboxsearchwidgetwrapper.sip
 %Include editorwidgets/qgsdatetimeedit.sip
+%Include editorwidgets/qgsdatetimesearchwidgetwrapper.sip
 %Include editorwidgets/qgsdefaultsearchwidgetwrapper.sip
 %Include editorwidgets/qgsdoublespinbox.sip
 %Include editorwidgets/qgsmultiedittoolbutton.sip

src/gui/CMakeLists.txt

@@ -105,6 +105,7 @@ SET(QGIS_GUI_SRCS
   editorwidgets/qgsdatetimeeditfactory.cpp
   editorwidgets/qgsdatetimeeditconfig.cpp
   editorwidgets/qgsdatetimeeditwrapper.cpp
+  editorwidgets/qgsdatetimesearchwidgetwrapper.cpp
   editorwidgets/qgsdefaultsearchwidgetwrapper.cpp
   editorwidgets/qgsdoublespinbox.cpp
   editorwidgets/qgsdummyconfigdlg.cpp
@@ -530,6 +531,7 @@ SET(QGIS_GUI_MOC_HDRS
   editorwidgets/qgscolorwidgetwrapper.h
   editorwidgets/qgsdatetimeedit.h
   editorwidgets/qgsdatetimeeditconfig.h
+  editorwidgets/qgsdatetimesearchwidgetwrapper.h
   editorwidgets/qgsdatetimeeditwrapper.h
   editorwidgets/qgsdefaultsearchwidgetwrapper.h
   editorwidgets/qgsdoublespinbox.h

src/gui/editorwidgets/qgsdatetimeeditfactory.cpp

@@ -16,6 +16,7 @@
 #include "qgsdatetimeeditfactory.h"
 #include "qgsdatetimeeditconfig.h"
 #include "qgsdatetimeeditwrapper.h"
+#include "qgsdatetimesearchwidgetwrapper.h"
 
 #include <QSettings>
 
@@ -29,6 +30,11 @@ QgsEditorWidgetWrapper *QgsDateTimeEditFactory::create( QgsVectorLayer *vl, int
   return new QgsDateTimeEditWrapper( vl, fieldIdx, editor, parent );
 }
 
+QgsSearchWidgetWrapper* QgsDateTimeEditFactory::createSearchWidget( QgsVectorLayer* vl, int fieldIdx, QWidget* parent ) const
+{
+  return new QgsDateTimeSearchWidgetWrapper( vl, fieldIdx, parent );
+}
+
 QgsEditorConfigWidget *QgsDateTimeEditFactory::configWidget( QgsVectorLayer *vl, int fieldIdx, QWidget *parent ) const
 {
   return new QgsDateTimeEditConfig( vl, fieldIdx, parent );

src/gui/editorwidgets/qgsdatetimeeditfactory.h

@@ -34,6 +34,7 @@ class GUI_EXPORT QgsDateTimeEditFactory : public QgsEditorWidgetFactory
     // QgsEditorWidgetFactory interface
   public:
     QgsEditorWidgetWrapper* create( QgsVectorLayer *vl, int fieldIdx, QWidget *editor, QWidget *parent ) const override;
+    QgsSearchWidgetWrapper* createSearchWidget( QgsVectorLayer* vl, int fieldIdx, QWidget* parent ) const override;
     QgsEditorConfigWidget* configWidget( QgsVectorLayer *vl, int fieldIdx, QWidget *parent ) const override;
     QgsEditorWidgetConfig readConfig( const QDomElement &configElement, QgsVectorLayer *layer, int fieldIdx ) override;
     void writeConfig( const QgsEditorWidgetConfig& config, QDomElement& configElement, QDomDocument& doc, const QgsVectorLayer* layer, int fieldIdx ) override;

src/gui/editorwidgets/qgsdatetimeeditwrapper.cpp

@@ -101,6 +101,12 @@ bool QgsDateTimeEditWrapper::valid() const
   return mQgsDateTimeEdit || mQDateTimeEdit;
 }
 
+void QgsDateTimeEditWrapper::showIndeterminateState()
+{
+  if ( mQgsDateTimeEdit )
+    mQgsDateTimeEdit->setEmpty();
+}
+
 void QgsDateTimeEditWrapper::dateTimeChanged( const QDateTime& dateTime )
 {
   const QString fieldFormat = config( "field_format", QGSDATETIMEEDIT_DATEFORMAT ).toString();

src/gui/editorwidgets/qgsdatetimeeditwrapper.h

@@ -55,6 +55,7 @@ class GUI_EXPORT QgsDateTimeEditWrapper : public QgsEditorWidgetWrapper
     QWidget *createWidget( QWidget *parent ) override;
     void initWidget( QWidget *editor ) override;
     bool valid() const override;
+    virtual void showIndeterminateState() override;
 
   public slots:
     void setValue( const QVariant &value ) override;

src/gui/editorwidgets/qgsdatetimesearchwidgetwrapper.cpp

@@ -0,0 +1,171 @@
+/***************************************************************************
+    qgsdatetimesearchwidgetwrapper.cpp
+     ---------------------------------
+    Date                 : 2016-05-23
+    Copyright            : (C) 2016 Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgsdatetimesearchwidgetwrapper.h"
+
+#include "qgsfield.h"
+#include "qgsdatetimeeditfactory.h"
+#include "qgsvectorlayer.h"
+#include "qgsdatetimeedit.h"
+#include "qcalendarwidget.h"
+
+#include <QSettings>
+
+QgsDateTimeSearchWidgetWrapper::QgsDateTimeSearchWidgetWrapper( QgsVectorLayer* vl, int fieldIdx, QWidget* parent )
+    : QgsSearchWidgetWrapper( vl, fieldIdx, parent )
+    , mDateTimeEdit( nullptr )
+    , mLayer( nullptr )
+{
+}
+
+bool QgsDateTimeSearchWidgetWrapper::applyDirectly()
+{
+  return true;
+}
+
+QString QgsDateTimeSearchWidgetWrapper::expression()
+{
+  return mExpression;
+}
+
+QVariant QgsDateTimeSearchWidgetWrapper::value() const
+{
+  if ( ! mDateTimeEdit )
+    return QDateTime();
+
+  const QString fieldFormat = config( "field_format", QGSDATETIMEEDIT_DATEFORMAT ).toString();
+  return mDateTimeEdit->dateTime().toString( fieldFormat );
+}
+
+QgsSearchWidgetWrapper::FilterFlags QgsDateTimeSearchWidgetWrapper::supportedFlags() const
+{
+  return EqualTo | NotEqualTo | GreaterThan | LessThan | GreaterThanOrEqualTo | LessThanOrEqualTo | IsNull;
+}
+
+QgsSearchWidgetWrapper::FilterFlags QgsDateTimeSearchWidgetWrapper::defaultFlags() const
+{
+  return EqualTo;
+}
+
+QString QgsDateTimeSearchWidgetWrapper::createExpression( QgsSearchWidgetWrapper::FilterFlags flags ) const
+{
+  QString fieldName = QgsExpression::quotedColumnRef( layer()->fields().at( mFieldIdx ).name() );
+
+  //clear any unsupported flags
+  flags &= supportedFlags();
+  if ( flags & IsNull )
+    return fieldName + " IS NULL";
+
+  QVariant v = value();
+  if ( !v.isValid() )
+    return QString();
+
+  if ( flags & EqualTo )
+    return fieldName + "='" + v.toString() + '\'';
+  else if ( flags & NotEqualTo )
+    return fieldName + "<>'" + v.toString() + '\'';
+  else if ( flags & GreaterThan )
+    return fieldName + ">'" + v.toString() + '\'';
+  else if ( flags & LessThan )
+    return fieldName + "<'" + v.toString() + '\'';
+  else if ( flags & GreaterThanOrEqualTo )
+    return fieldName + ">='" + v.toString() + '\'';
+  else if ( flags & LessThanOrEqualTo )
+    return fieldName + "<='" + v.toString() + '\'';
+
+  return QString();
+}
+
+void QgsDateTimeSearchWidgetWrapper::clearWidget()
+{
+  if ( mDateTimeEdit )
+  {
+    mDateTimeEdit->setEmpty();
+  }
+}
+
+void QgsDateTimeSearchWidgetWrapper::setEnabled( bool enabled )
+{
+  if ( mDateTimeEdit )
+  {
+    mDateTimeEdit->setEnabled( enabled );
+  }
+}
+
+bool QgsDateTimeSearchWidgetWrapper::valid() const
+{
+  return true;
+}
+
+void QgsDateTimeSearchWidgetWrapper::setExpression( QString exp )
+{
+  QString fieldName = layer()->fields().at( mFieldIdx ).name();
+
+  QString str = QString( "%1 = '%3'" )
+                .arg( QgsExpression::quotedColumnRef( fieldName ),
+                      exp.replace( '\'', "''" )
+                    );
+  mExpression = str;
+}
+
+void QgsDateTimeSearchWidgetWrapper::dateTimeChanged( const QDateTime& dt )
+{
+  if ( mDateTimeEdit )
+  {
+    QString exp = value().toString();
+    setExpression( exp );
+    if ( dt.isValid() && !dt.isNull() )
+      emit valueChanged();
+    else
+      emit valueCleared();
+    emit expressionChanged( mExpression );
+  }
+}
+
+QWidget* QgsDateTimeSearchWidgetWrapper::createWidget( QWidget* parent )
+{
+  QgsDateTimeEdit* widget = new QgsDateTimeEdit( parent );
+  widget->setEmpty();
+  return widget;
+}
+
+void QgsDateTimeSearchWidgetWrapper::initWidget( QWidget* editor )
+{
+  mDateTimeEdit = qobject_cast<QgsDateTimeEdit*>( editor );
+
+  if ( mDateTimeEdit )
+  {
+    mDateTimeEdit->setAllowNull( false );
+
+    const QString displayFormat = config( "display_format", QGSDATETIMEEDIT_DATEFORMAT ).toString();
+    mDateTimeEdit->setDisplayFormat( displayFormat );
+
+    const bool calendar = config( "calendar_popup", false ).toBool();
+    mDateTimeEdit->setCalendarPopup( calendar );
+    if ( calendar )
+    {
+      // highlight today's date
+      QTextCharFormat todayFormat;
+      todayFormat.setBackground( QColor( 160, 180, 200 ) );
+      mDateTimeEdit->calendarWidget()->setDateTextFormat( QDate::currentDate(), todayFormat );
+    }
+
+    mDateTimeEdit->setEmpty();
+
+    connect( mDateTimeEdit, SIGNAL( dateTimeChanged( QDateTime ) ), this, SLOT( dateTimeChanged( QDateTime ) ) );
+  }
+}
+
+

src/gui/editorwidgets/qgsdatetimesearchwidgetwrapper.h

@@ -0,0 +1,67 @@
+/***************************************************************************
+    qgsdatetimesearchwidgetwrapper.h
+     -------------------------------
+    Date                 : 2016-05-23
+    Copyright            : (C) 2016 Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSDATETIMESEARCHWIDGETWRAPPER_H
+#define QGSDATETIMESEARCHWIDGETWRAPPER_H
+
+#include "qgssearchwidgetwrapper.h"
+#include "qgsdatetimeeditwrapper.h"
+
+#include <QComboBox>
+#include <QListWidget>
+#include <QLineEdit>
+
+class QgsDateTimeEditFactory;
+
+/**
+ * Wraps a date time search widget.
+ */
+class GUI_EXPORT QgsDateTimeSearchWidgetWrapper : public QgsSearchWidgetWrapper
+{
+    Q_OBJECT
+
+  public:
+    explicit QgsDateTimeSearchWidgetWrapper( QgsVectorLayer* vl, int fieldIdx, QWidget* parent = nullptr );
+    bool applyDirectly() override;
+    QString expression() override;
+    bool valid() const override;
+    QVariant value() const;
+    FilterFlags supportedFlags() const override;
+    FilterFlags defaultFlags() const override;
+    virtual QString createExpression( FilterFlags flags ) const override;
+
+  public slots:
+
+    virtual void clearWidget() override;
+    virtual void setEnabled( bool enabled ) override;
+
+  protected:
+    QWidget* createWidget( QWidget* parent ) override;
+    void initWidget( QWidget* editor ) override;
+
+  protected slots:
+    void setExpression( QString exp ) override;
+
+  private slots:
+    void dateTimeChanged( const QDateTime &date );
+
+  private:
+    QgsDateTimeEdit* mDateTimeEdit;
+    QgsVectorLayer* mLayer;
+
+    friend class QgsDateTimeEditFactory;
+};
+
+#endif // QGSDATETIMESEARCHWIDGETWRAPPER_H