Implement context menu for search results

Subclass QTreeView to show a custom context menu. Since the depth of
some items is > 1, add an option to expand and collapse a node
recursively.

5 files changed, 91 insertions, 6 deletions

diff --git a/ShemovCleaner.pro b/ShemovCleaner.pro
index e03b164..8f59657 100644
--- a/ShemovCleaner.pro
+++ b/ShemovCleaner.pro
@@ -37,7 +37,8 @@ HEADERS += \
            viewer.h \
     cachedfiledata.h \
     itemselectionwidget.h \
-    searchdialog.h
+    searchdialog.h \
+    searchview.h
 SOURCES += \
            configurationwidget.cpp \
            filecopier.cpp \
@@ -56,5 +57,6 @@ SOURCES += \
            viewer.cpp \
     cachedfiledata.cpp \
     itemselectionwidget.cpp \
-    searchdialog.cpp
+    searchdialog.cpp \
+    searchview.cpp
 RESOURCES += shemovcleaner.qrc
diff --git a/searchdialog.cpp b/searchdialog.cpp
index 1f59839..8c255c8 100644
--- a/searchdialog.cpp
+++ b/searchdialog.cpp
@@ -15,6 +15,7 @@
 #include <QApplication>
 
 #include "searchdialog.h"
+#include "searchview.h"
 #include "helper.h"
 
 SearchDialog::SearchDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent, f){
@@ -39,7 +40,7 @@ SearchDialog::SearchDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent,
     mResM = new QStandardItemModel;
     QSortFilterProxyModel *resMProxy = new QSortFilterProxyModel;
     resMProxy->setSourceModel(mResM);
-    mResV = new QTreeView;
+    mResV = new SearchView;
     mResV->setModel(resMProxy);
     connect(mResV->selectionModel(), &QItemSelectionModel::currentChanged, this, &SearchDialog::doResult);
     QHBoxLayout *resGBL = new QHBoxLayout;
@@ -49,7 +50,7 @@ SearchDialog::SearchDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent,
     mDataM = new QStandardItemModel;
     QSortFilterProxyModel *dataMProxy = new QSortFilterProxyModel;
     dataMProxy->setSourceModel(mDataM);
-    mDataV = new QTreeView;
+    mDataV = new SearchView;
     mDataV->setModel(dataMProxy);
     QHBoxLayout *dataGBL = new QHBoxLayout;
     dataGBL->addWidget(mDataV);
diff --git a/searchdialog.h b/searchdialog.h
index 0ef4aad..b5b9ba4 100644
--- a/searchdialog.h
+++ b/searchdialog.h
@@ -8,6 +8,7 @@ class QComboBox;
 class QTreeView;
 class QStandardItemModel;
 class QStandardItem;
+class SearchView;
 
 class SearchDialog : public QDialog {
     Q_OBJECT
@@ -37,8 +38,8 @@ class SearchDialog : public QDialog {
         void doActorGenres(QStandardItem *item);
         QLineEdit *mSearch;
         QComboBox *mTypeSel;
-        QTreeView *mResV;
-        QTreeView *mDataV;
+        SearchView *mResV;
+        SearchView *mDataV;
         QStandardItemModel *mResM;
         QStandardItemModel *mDataM;
 };
diff --git a/searchview.cpp b/searchview.cpp
new file mode 100644
index 0000000..a4ba25b
--- /dev/null
+++ b/searchview.cpp
@@ -0,0 +1,53 @@
+#include <QMenu>
+#include <QAction>
+#include <QContextMenuEvent>
+
+#include "searchview.h"
+#include "helper.h"
+
+SearchView::SearchView(QWidget *parent) : QTreeView(parent){
+    mCtxMenu = new QMenu(this);
+    QAction *expandCurA = new QAction(Helper::icon(QColor(255,85,255), QChar(0x21B3)), tr("Expand"), this);
+    connect(expandCurA, &QAction::triggered, this, &SearchView::expandNode);
+    mCtxMenu->addAction(expandCurA);
+    QAction *collapseCurA = new QAction(Helper::icon(QColor(255,85,255), QChar(0x21B0)), tr("Collapse"), this);
+    connect(collapseCurA, &QAction::triggered, this, &SearchView::collapseNode);
+    mCtxMenu->addAction(collapseCurA);
+    mCtxMenu->addSeparator();
+    QAction *expandAllA = new QAction(Helper::icon(QColor(255,85,255), QChar(0x2198)), tr("Expand all"), this);
+    connect(expandAllA, &QAction::triggered, this, &SearchView::expandAll);
+    mCtxMenu->addAction(expandAllA);
+    QAction *collapseAllA = new QAction(Helper::icon(QColor(255,85,255), QChar(0x2196)), tr("Collapse all"), this);
+    connect(collapseAllA, &QAction::triggered, this, &SearchView::collapseAll);
+    mCtxMenu->addAction(collapseAllA);
+}
+
+void SearchView::expandNode(){
+    QModelIndex idx = currentIndex();
+    expand(idx);
+    doNodeR(idx, Expand);
+}
+
+void SearchView::collapseNode(){
+    QModelIndex idx = currentIndex();
+    collapse(idx);
+    doNodeR(idx, Collapse);
+}
+
+void SearchView::contextMenuEvent(QContextMenuEvent *e){
+    mCtxMenu->exec(e->globalPos());
+}
+
+void SearchView::doNodeR(const QModelIndex &parent, int nAction){
+    for(int i = 0; i < model()->rowCount(parent); ++i){
+        QModelIndex cur = model()->index(i, 0, parent);
+        if(nAction == Expand){
+            expand(cur);
+        }else if(nAction == Collapse){
+            collapse(cur);
+        }
+        if(model()->hasChildren(cur)){
+            doNodeR(cur, nAction);
+        }
+    }
+}
diff --git a/searchview.h b/searchview.h
new file mode 100644
index 0000000..33cd02c
--- /dev/null
+++ b/searchview.h
@@ -0,0 +1,28 @@
+#ifndef SEARCHVIEW_H
+#define SEARCHVIEW_H
+
+#include <QTreeView>
+
+class QMenu;
+class QContextMenuEvent;
+
+class SearchView : public QTreeView {
+    Q_OBJECT
+    public:
+        enum NodeAction { Expand, Collapse };
+        explicit SearchView(QWidget *parent = 0);
+
+    public slots:
+        void expandNode();
+        void collapseNode();
+
+    protected:
+        virtual void contextMenuEvent(QContextMenuEvent *e);
+
+    private:
+        void doNodeR(const QModelIndex &parent, int nAction);
+        QMenu *mCtxMenu;
+
+};
+
+#endif // SEARCHVIEW_H