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.

1 files changed, 53 insertions, 0 deletions

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);
+        }
+    }
+}