Add widget and dialog for finding files by pattern match, with an

optional recursive search

python/gui/auto_generated/qgsfindfilesbypatternwidget.sip.in

@@ -0,0 +1,82 @@
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/qgsfindfilesbypatternwidget.h                                *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/
+
+
+
+
+
+class QgsFindFilesByPatternWidget : QWidget
+{
+%Docstring
+A reusable widget for finding files (recursively) by file pattern.
+
+.. versionadded:: 3.8
+%End
+
+%TypeHeaderCode
+#include "qgsfindfilesbypatternwidget.h"
+%End
+  public:
+
+    QgsFindFilesByPatternWidget( QWidget *parent /TransferThis/ = 0 );
+%Docstring
+Constructor for QgsFindFilesByPatternWidget, with the specified ``parent`` widget.
+%End
+
+    QStringList files() const;
+%Docstring
+Returns the list of files found by the dialog.
+
+.. seealso:: :py:func:`filesFound`
+%End
+
+  signals:
+
+    void filesFound( const QStringList &files );
+%Docstring
+Emitted after files are found in the dialog.
+
+.. seealso:: :py:func:`files`
+%End
+
+};
+
+class QgsFindFilesByPatternDialog : QDialog
+{
+%Docstring
+A dialog for finding files (recursively) by file pattern.
+
+.. versionadded:: 3.8
+%End
+
+%TypeHeaderCode
+#include "qgsfindfilesbypatternwidget.h"
+%End
+  public:
+
+    QgsFindFilesByPatternDialog( QWidget *parent /TransferThis/ = 0 );
+%Docstring
+Constructor for QgsFindFilesByPatternDialog, with the specified ``parent`` widget.
+%End
+
+    QStringList files() const;
+%Docstring
+Returns the list of files found by the dialog.
+
+.. seealso:: :py:func:`filesFound`
+%End
+
+};
+
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/qgsfindfilesbypatternwidget.h                                *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/

python/gui/gui_auto.sip

@@ -113,6 +113,7 @@
 %Include auto_generated/qgsfeatureselectiondlg.sip
 %Include auto_generated/qgsfieldcombobox.sip
 %Include auto_generated/qgsfieldexpressionwidget.sip
+%Include auto_generated/qgsfindfilesbypatternwidget.sip
 %Include auto_generated/qgsfeaturelistcombobox.sip
 %Include auto_generated/qgsfieldvalidator.sip
 %Include auto_generated/qgsfieldvalueslineedit.sip

src/gui/CMakeLists.txt

@@ -277,6 +277,7 @@ SET(QGIS_GUI_SRCS
   qgsfilecontentsourcelineedit.cpp
   qgsfilewidget.cpp
   qgsfilterlineedit.cpp
+  qgsfindfilesbypatternwidget.cpp
   qgsfloatingwidget.cpp
   qgsfocuswatcher.cpp
   qgsfontbutton.cpp
@@ -452,6 +453,7 @@ SET(QGIS_GUI_MOC_HDRS
   qgsfeatureselectiondlg.h
   qgsfieldcombobox.h
   qgsfieldexpressionwidget.h
+  qgsfindfilesbypatternwidget.h
   qgsfeaturelistcombobox.h
   qgsfieldvalidator.h
   qgsfieldvalueslineedit.h

src/gui/qgsfindfilesbypatternwidget.cpp

@@ -0,0 +1,147 @@
+/***************************************************************************
+    qgsfindfilesbypatternwidget.cpp
+    -----------------------------
+    begin                : April 2019
+    copyright            : (C) 2019 by 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 "qgsfindfilesbypatternwidget.h"
+#include "qgsgui.h"
+#include "qgssettings.h"
+
+#include <QDir>
+#include <QDirIterator>
+#include <QDialogButtonBox>
+
+
+QgsFindFilesByPatternWidget::QgsFindFilesByPatternWidget( QWidget *parent )
+  : QWidget( parent )
+{
+  setupUi( this );
+
+  mFolderWidget->setStorageMode( QgsFileWidget::GetDirectory );
+  mResultsTable->setColumnCount( 2 );
+
+  mResultsTable->setHorizontalHeaderLabels( QStringList() << tr( "File" ) << tr( "Directory" ) );
+  mResultsTable->horizontalHeader()->setSectionResizeMode( 0, QHeaderView::Stretch );
+  mResultsTable->horizontalHeader()->setSectionResizeMode( 1, QHeaderView::Stretch );
+
+  connect( mFindButton, &QPushButton::clicked, this, &QgsFindFilesByPatternWidget::find );
+
+  QgsSettings settings;
+  mFolderWidget->setFilePath( settings.value( QStringLiteral( "qgis/lastFindRecursiveFolder" ) ).toString() );
+  mFindButton->setEnabled( !mFolderWidget->filePath().isEmpty() );
+  connect( mFolderWidget, &QgsFileWidget::fileChanged, this, [ = ]( const QString & filePath )
+  {
+    QgsSettings settings;
+    settings.setValue( QStringLiteral( "qgis/lastFindRecursiveFolder" ), filePath );
+    mFindButton->setEnabled( !filePath.isEmpty() );
+  } );
+
+}
+
+void QgsFindFilesByPatternWidget::find()
+{
+  mFindButton->setText( tr( "Cancel" ) );
+  disconnect( mFindButton, &QPushButton::clicked, this, &QgsFindFilesByPatternWidget::find );
+  connect( mFindButton, &QPushButton::clicked, this, &QgsFindFilesByPatternWidget::cancel );
+  mCanceled = false;
+
+  mResultsTable->setRowCount( 0 );
+  mFiles.clear();
+
+  const QString pattern = mPatternLineEdit->text();
+  const QString path = mFolderWidget->filePath();
+
+  QDir startDir( path );
+
+  QStringList filter;
+  if ( !pattern.isEmpty() )
+    filter << pattern;
+
+  QDirIterator it( path, filter, QDir::AllEntries | QDir::NoSymLinks | QDir::NoDotAndDotDot, mRecursiveCheckBox->isChecked() ? QDirIterator::Subdirectories : QDirIterator::NoIteratorFlags );
+  QStringList files;
+  while ( it.hasNext() )
+  {
+    const QString fullPath = it.next();
+    mFiles << fullPath;
+
+    QFileInfo fi( fullPath );
+
+    const QString toolTip = QDir::toNativeSeparators( fullPath );
+    const QString fileName = fi.fileName();
+    const QString relativeDirectory = QDir::toNativeSeparators( startDir.relativeFilePath( fi.dir().absolutePath() ) );
+    const QString fullDirectory = QDir::toNativeSeparators( fi.dir().absolutePath() );
+
+    QTableWidgetItem *fileNameItem = new QTableWidgetItem( fileName );
+    fileNameItem->setToolTip( toolTip );
+    fileNameItem->setFlags( fileNameItem->flags() ^ Qt::ItemIsEditable );
+
+    QTableWidgetItem *directoryItem = new QTableWidgetItem( relativeDirectory );
+    directoryItem->setToolTip( fullDirectory );
+    directoryItem->setFlags( directoryItem->flags() ^ Qt::ItemIsEditable );
+
+    const int row = mResultsTable->rowCount();
+    mResultsTable->insertRow( row );
+    mResultsTable->setItem( row, 0, fileNameItem );
+    mResultsTable->setItem( row, 1, directoryItem );
+
+    QCoreApplication::processEvents();
+    if ( mCanceled )
+      break;
+  }
+
+  mFindButton->setText( tr( "Find Files" ) );
+  disconnect( mFindButton, &QPushButton::clicked, this, &QgsFindFilesByPatternWidget::cancel );
+  connect( mFindButton, &QPushButton::clicked, this, &QgsFindFilesByPatternWidget::find );
+
+  emit filesFound( mFiles );
+}
+
+void QgsFindFilesByPatternWidget::cancel()
+{
+  mCanceled = true;
+}
+
+
+//
+// QgsFindFilesByPatternDialog
+//
+
+QgsFindFilesByPatternDialog::QgsFindFilesByPatternDialog( QWidget *parent )
+  : QDialog( parent )
+{
+  setWindowTitle( tr( "Find Files by Pattern" ) );
+  setObjectName( "QgsFindFilesByPatternDialog" );
+
+  QgsGui::enableAutoGeometryRestore( this );
+
+  QVBoxLayout *vLayout = new QVBoxLayout();
+  mWidget = new QgsFindFilesByPatternWidget();
+
+  vLayout->addWidget( mWidget );
+  mButtonBox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal );
+  connect( mButtonBox, &QDialogButtonBox::accepted, this, &QDialog::accept );
+  connect( mButtonBox, &QDialogButtonBox::rejected, this, &QDialog::reject );
+  vLayout->addWidget( mButtonBox );
+  setLayout( vLayout );
+
+  mButtonBox->button( QDialogButtonBox::Ok )->setEnabled( false );
+  connect( mWidget, &QgsFindFilesByPatternWidget::filesFound, this, [ = ]( const QStringList & files )
+  {
+    mButtonBox->button( QDialogButtonBox::Ok )->setEnabled( !files.empty() );
+  } );
+}
+
+QStringList QgsFindFilesByPatternDialog::files() const
+{
+  return mWidget->files();
+}

src/gui/qgsfindfilesbypatternwidget.h

@@ -0,0 +1,99 @@
+/***************************************************************************
+    qgsfindfilesbypatternwidget.h
+    -----------------------------
+    begin                : April 2019
+    copyright            : (C) 2019 by 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 QGSFINDFILESBYPATTERNWIDGET_H
+#define QGSFINDFILESBYPATTERNWIDGET_H
+
+#include "ui_qgsfindfilesbypatternwidget.h"
+#include "qgis_gui.h"
+
+#include <QDialog>
+
+class QDialogButtonBox;
+
+/**
+ * \class QgsFindFilesByPatternWidget
+ * \ingroup gui
+ * A reusable widget for finding files (recursively) by file pattern.
+ * \since QGIS 3.8
+ */
+class GUI_EXPORT QgsFindFilesByPatternWidget : public QWidget, private Ui::QgsFindFilesByPatternWidgetBase
+{
+    Q_OBJECT
+
+  public:
+
+    /**
+     * Constructor for QgsFindFilesByPatternWidget, with the specified \a parent widget.
+     */
+    QgsFindFilesByPatternWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );
+
+    /**
+     * Returns the list of files found by the dialog.
+     * \see filesFound()
+     */
+    QStringList files() const { return mFiles; }
+
+  signals:
+
+    /**
+     * Emitted after files are found in the dialog.
+     *
+     * \see files()
+     */
+    void filesFound( const QStringList &files );
+
+  private slots:
+
+    void find();
+    void cancel();
+
+  private:
+
+    bool mCanceled = false;
+    QStringList mFiles;
+};
+
+/**
+ * \class QgsFindFilesByPatternDialog
+ * \ingroup gui
+ * A dialog for finding files (recursively) by file pattern.
+ * \since QGIS 3.8
+ */
+class GUI_EXPORT QgsFindFilesByPatternDialog : public QDialog
+{
+    Q_OBJECT
+
+  public:
+
+    /**
+     * Constructor for QgsFindFilesByPatternDialog, with the specified \a parent widget.
+     */
+    QgsFindFilesByPatternDialog( QWidget *parent SIP_TRANSFERTHIS = nullptr );
+
+    /**
+     * Returns the list of files found by the dialog.
+     * \see filesFound()
+     */
+    QStringList files() const;
+
+  private:
+
+    QgsFindFilesByPatternWidget *mWidget = nullptr;
+    QDialogButtonBox *mButtonBox = nullptr;
+
+};
+
+#endif // QGSFINDFILESBYPATTERNWIDGET_H