How to select the text in the tree view to change the properties in QDOM model tree which generated from XML?
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I want my items to be highlighted or change to blue like when we select multiple items using CTRL key.
DomItem.cpp #include "DOMItem.h" #include<QCheckBox> #include <QtXml> //! [0] DomItem::DomItem(const QDomNode &node, int row, DomItem *parent) : domNode(node), //! [0] // Record the item's location within its parent. //! [1] parentItem(parent), rowNumber(row) {} //! [1] //! [2] DomItem::~DomItem() { qDeleteAll(childItems); } //! [2] //! [3] QDomNode DomItem::node() const { return domNode; } //! [3] //! [4] DomItem *DomItem::parent() { return parentItem; } //! [4] //! [5] DomItem *DomItem::child(int i) { DomItem *childItem = childItems.value(i); if (childItem) return childItem; // if child does not yet exist, create it if (i >= 0 && i < domNode.childNodes().count()) { QDomNode childNode = domNode.childNodes().item(i); childItem = new DomItem(childNode, i, this); childItems[i] = childItem; } return childItem; } //! [5] //! [6] int DomItem::row() const { return rowNumber; } //! [6] QVariant DomItem::data(int column) const { return itemData.value(column); }DomModel.cpp #include "DomModel.h" #include "DOMItem.h" //#include "mainwindow.h" #include <QtXml> //! [0] DomModel::DomModel(const QDomDocument &document, QObject *parent) : QAbstractItemModel(parent), domDocument(document), rootItem(new DomItem(domDocument, 0)) { } //! [0] //! [1] DomModel::~DomModel() { delete rootItem; } //! [1] //! [2] int DomModel::columnCount(const QModelIndex &parent) const { Q_UNUSED(parent); return 3; } //! [2] QVariant DomModel::data(const QModelIndex &index, int role) const { if (!index.isValid()) return QVariant(); DomItem *item = static_cast<DomItem*>(index.internalPointer()); const QDomNode node = item->node(); //if ( role == Qt::CheckStateRole && index.column() == 0 ) if ( role == Qt::CheckStateRole && !index.parent().isValid()) return static_cast< int >( item->isChecked() ? Qt::Checked : Qt::Unchecked ); if (role != Qt::DisplayRole) return QVariant(); switch (index.column()) { case 0: return node.nodeName(); case 1: { const QDomNamedNodeMap attributeMap = node.attributes(); QStringList attributes; for (int i = 0; i < attributeMap.count(); ++i) { QDomNode attribute = attributeMap.item(i); attributes << attribute.nodeName() + "=\"" + attribute.nodeValue() + '"'; } return attributes.join(' '); } case 2: return node.nodeValue().split('\n').join(' '); default: break; } return item->data(index.column()); } Qt::ItemFlags DomModel::flags(const QModelIndex &index) const { if (!index.isValid()) return Qt::NoItemFlags; Qt::ItemFlags flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable; if ( index.column() == 0 ) flags |= Qt::ItemIsUserCheckable; return flags; } //! [6] QVariant DomModel::headerData(int section, Qt::Orientation orientation, int role) const { if (orientation == Qt::Horizontal && role == Qt::DisplayRole) { switch (section) { case 0: return tr("Name"); case 1: return tr("Attributes"); case 2: return tr("Value"); default: break; } } return QVariant(); } //! [6] //! [7] QModelIndex DomModel::index(int row, int column, const QModelIndex &parent) const { if (!hasIndex(row, column, parent)) return QModelIndex(); DomItem *parentItem; if (!parent.isValid()) parentItem = rootItem; else parentItem = static_cast<DomItem*>(parent.internalPointer()); //! [7] //! [8] DomItem *childItem = parentItem->child(row); if (childItem) return createIndex(row, column, childItem); return QModelIndex(); } //! [8] //! [9] QModelIndex DomModel::parent(const QModelIndex &child) const { if (!child.isValid()) return QModelIndex(); DomItem *childItem = static_cast<DomItem*>(child.internalPointer()); DomItem *parentItem = childItem->parent(); if (!parentItem || parentItem == rootItem) return QModelIndex(); return createIndex(parentItem->row(), 0, parentItem); } //! [9] //! [10] int DomModel::rowCount(const QModelIndex &parent) const { if (parent.column() > 0) return 0; DomItem *parentItem; if (!parent.isValid()) parentItem = rootItem; else parentItem = static_cast<DomItem*>(parent.internalPointer()); return parentItem->node().childNodes().count(); } //! [10] //! bool DomModel::setData(const QModelIndex &index, const QVariant &value, int role) { DomItem *item = static_cast<DomItem*>(index.internalPointer()); if (index.column() == 0 ){ if (role == Qt::EditRole) { return false; } if (role == Qt::CheckStateRole) { item->setChecked(value.toBool()); emit dataChanged(index, index); return true; } } return QAbstractItemModel::setData(index, value, role); }mainwindow.cpp #include "mainwindow.h" #include "ui_mainwindow.h" #include "DomModel.h" #include <QDomDocument> #include <QTreeView> #include <QMenuBar> #include <QFileDialog> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), model(new DomModel(QDomDocument(), this)), view(new QTreeView(this)) { fileMenu = menuBar()->addMenu(tr("&File")); fileMenu->addAction(tr("&Open..."), this, &MainWindow::openFile, QKeySequence::Open); fileMenu->addAction(tr("E&xit"), this, &QWidget::close, QKeySequence::Quit); view->setModel(model); setCentralWidget(view); setWindowTitle(tr("QTreeViewXML")); } void MainWindow::openFile() { QString filePath = QFileDialog::getOpenFileName(this, tr("Open File"), xmlPath, tr("XML files (*.xml);;HTML files (*.html);;" "SVG files (*.svg);;User Interface files (*.ui)")); if (!filePath.isEmpty()) { QFile file(filePath); if (file.open(QIODevice::ReadOnly)) { QDomDocument document; if (document.setContent(&file)) { DomModel *newModel = new DomModel(document, this); view->setModel(newModel); delete model; model = newModel; xmlPath = filePath; } file.close(); } } }
