QGIS API Documentation  3.20.0-Odense (decaadbb31)
qgslocatorwidget.h
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1 /***************************************************************************
2  qgslocatorwidget.h
3  ------------------
4  begin : May 2017
5  copyright : (C) 2017 by Nyall Dawson
6  email : nyall dot dawson at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSLOCATORWIDGET_H
19 #define QGSLOCATORWIDGET_H
20 
21 #include "qgis_gui.h"
22 #include "qgslocatorfilter.h"
23 #include "qgsfloatingwidget.h"
24 #include "qgsfilterlineedit.h"
25 
26 #include <QWidget>
27 #include <QTreeView>
28 #include <QFocusEvent>
29 #include <QHeaderView>
30 #include <QTimer>
31 
32 class QgsLocator;
33 class QgsLocatorResultsView;
34 class QgsMapCanvas;
36 class QgsLocatorLineEdit;
37 
46 class GUI_EXPORT QgsLocatorWidget : public QWidget
47 {
48  Q_OBJECT
49 
50  public:
51 
55  QgsLocatorWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );
56 
60  QgsLocator *locator();
61 
67  void setMapCanvas( QgsMapCanvas *canvas );
68 
69  public slots:
70 
74  void search( const QString &string );
75 
80  void invalidateResults();
81 
82  signals:
83 
88 
89  protected:
90  bool eventFilter( QObject *obj, QEvent *event ) override;
91 
92  private slots:
93  void performSearch();
94  void showList();
95  void triggerSearchAndShowList();
96  void configMenuAboutToShow();
97  void scheduleDelayedPopup();
98  void resultAdded();
99  void showContextMenu( const QPoint &point );
100 
101  private:
102  QgsLocatorModelBridge *mModelBridge = nullptr;
103  QgsLocatorLineEdit *mLineEdit = nullptr;
104  QgsFloatingWidget *mResultsContainer = nullptr;
105  QgsLocatorResultsView *mResultsView = nullptr;
106  QgsMapCanvas *mMapCanvas = nullptr;
107  QList<QMetaObject::Connection> mCanvasConnections;
108  QMenu *mMenu = nullptr;
109 
110  QTimer mFocusTimer;
111  QTimer mPopupTimer;
112  bool mHasSelectedResult = false;
113 
114  void acceptCurrentEntry();
115 
116 };
117 
118 #ifndef SIP_RUN
119 
121 
122 class QgsLocatorFilterFilter : public QgsLocatorFilter
123 {
124  Q_OBJECT
125 
126  public:
127 
128  QgsLocatorFilterFilter( QgsLocatorWidget *widget, QObject *parent = nullptr );
129 
130  QgsLocatorFilterFilter *clone() const override SIP_FACTORY;
131  QgsLocatorFilter::Flags flags() const override;
132 
133  QString name() const override { return QStringLiteral( "filters" );}
134  QString displayName() const override { return QString(); }
135  Priority priority() const override { return static_cast< QgsLocatorFilter::Priority>( -1 ); }
136  void fetchResults( const QString &string, const QgsLocatorContext &context, QgsFeedback *feedback ) override;
137  void triggerResult( const QgsLocatorResult &result ) override;
138 
139  private:
140  QgsLocatorWidget *mLocator = nullptr;
141 };
142 
149 class GUI_EXPORT QgsLocatorResultsView : public QTreeView
150 {
151  Q_OBJECT
152 
153  public:
154 
158  QgsLocatorResultsView( QWidget *parent = nullptr );
159 
163  void recalculateSize();
164 
168  void selectNextResult();
169 
173  void selectPreviousResult();
174 
175 };
176 
177 
184 class QgsLocatorLineEdit : public QgsFilterLineEdit
185 {
186  Q_OBJECT
187  public:
188  explicit QgsLocatorLineEdit( QgsLocatorWidget *locator, QWidget *parent = nullptr );
189 
191  bool performCompletion();
192 
193  protected:
194  void paintEvent( QPaintEvent *event ) override;
195 
196  private:
197  QgsLocatorWidget *mLocatorWidget = nullptr;
198  QString mCompletionText = nullptr;
199 };
200 
202 
203 #endif
204 
205 
206 #endif // QGSLOCATORWIDGET_H
207 
208 
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition: qgsfeedback.h:45
QLineEdit subclass with built in support for clearing the widget's value and handling custom null val...
A QWidget subclass for creating widgets which float outside of the normal Qt layout system.
Encapsulates the properties relating to the context of a locator search.
Abstract base class for filters which collect locator results.
virtual QgsLocatorFilter * clone() const =0
Creates a clone of the filter.
Priority
Filter priority. Controls the order of results in the locator.
virtual QString displayName() const =0
Returns a translated, user-friendly name for the filter.
virtual Priority priority() const
Returns the priority for the filter, which controls how results are ordered in the locator.
virtual void triggerResult(const QgsLocatorResult &result)=0
Triggers a filter result from this filter.
virtual void fetchResults(const QString &string, const QgsLocatorContext &context, QgsFeedback *feedback)=0
Retrieves the filter results for a specified search string.
The QgsLocatorModelBridge class provides the core functionality to be used in a locator widget.
Encapsulates properties of an individual matching result found by a QgsLocatorFilter.
A special locator widget which allows searching for matching results from a QgsLocator and presenting...
void configTriggered()
Emitted when the configure option is triggered in the widget.
Handles the management of QgsLocatorFilter objects and async collection of search results from them.
Definition: qgslocator.h:59
Map canvas is a class for displaying all GIS data types on a canvas.
Definition: qgsmapcanvas.h:86
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:53
#define SIP_FACTORY
Definition: qgis_sip.h:76