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/*
searchlinecontroller.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2015 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "searchlinecontroller.h"
#include <QLineEdit>
#include <QRegularExpression>
#include <QTimer>
#include <QTreeView>
#include <QAbstractProxyModel>
#include "common/remotemodelroles.h"
using namespace GammaRay;
namespace {
QAbstractItemModel *findEffectiveFilterModel(QAbstractItemModel *model)
{
Q_ASSERT(model);
if (model->metaObject()->indexOfProperty("filterKeyColumn") != -1) {
return model;
}
QAbstractProxyModel *proxy = qobject_cast<QAbstractProxyModel *>(model);
if (proxy) {
return findEffectiveFilterModel(proxy->sourceModel());
}
return nullptr;
}
}
SearchLineController::SearchLineController(QLineEdit *lineEdit, QAbstractItemModel *proxyModel, QTreeView *treeView)
: QObject(lineEdit)
, m_lineEdit(lineEdit)
, m_filterModel(findEffectiveFilterModel(proxyModel))
, m_targetTreeView(treeView)
{
Q_ASSERT(lineEdit);
Q_ASSERT(m_filterModel);
if (!m_filterModel) {
QMetaObject::invokeMethod(this, "deleteLater", Qt::QueuedConnection);
return;
}
m_filterModel->setProperty("filterKeyColumn", -1);
m_filterModel->setProperty("filterCaseSensitivity", Qt::CaseInsensitive);
activateSearch();
m_lineEdit->setClearButtonEnabled(true);
if (m_lineEdit->placeholderText().isEmpty())
m_lineEdit->setPlaceholderText(tr("Search"));
auto timer = new QTimer(this);
timer->setSingleShot(true);
timer->setInterval(300);
connect(lineEdit, &QLineEdit::textChanged, timer, [timer] { timer->start(); });
connect(timer, &QTimer::timeout, this, [this] {
activateSearch();
QTimer::singleShot(50, this, [this] {
onSearchFinished(m_lineEdit->text());
});
});
}
SearchLineController::~SearchLineController() = default;
void SearchLineController::activateSearch()
{
if (m_filterModel) {
m_filterModel->setProperty("filterRegularExpression",
QRegularExpression(m_lineEdit->text(), QRegularExpression::CaseInsensitiveOption));
}
}
void SearchLineController::onSearchFinished(const QString &searchTerm)
{
if (!m_targetTreeView) {
return;
}
if (searchTerm.isEmpty()) {
// Make sure we keep the current item in view on clearing
auto current = m_targetTreeView->currentIndex();
if (current.isValid()) {
m_targetTreeView->scrollTo(current);
}
return;
}
m_delayedIdxesToExpand.clear();
if (!m_delayedExpandTimer) {
m_delayedExpandTimer = new QTimer(this);
m_delayedExpandTimer->setSingleShot(true);
m_delayedExpandTimer->setInterval(125);
connect(m_delayedExpandTimer, &QTimer::timeout, this, [this] {
QVector<QPersistentModelIndex> stillNotLoaded;
const auto copy = m_delayedIdxesToExpand;
m_delayedIdxesToExpand.clear();
auto it = copy.cbegin();
auto end = copy.cend();
for (; it != end; ++it) {
const QModelIndex index = *it;
if (!index.isValid()) {
continue;
}
if (m_targetTreeView->isExpanded(index)) {
continue;
}
const auto state = index.data(RemoteModelRole::LoadingState).value<RemoteModelNodeState::NodeStates>();
if (!state.testFlag(RemoteModelNodeState::Empty)) {
expandRecursively(index);
continue;
}
QPersistentModelIndex notLoaded = index;
stillNotLoaded.append(notLoaded);
}
m_delayedIdxesToExpand << stillNotLoaded;
if (!m_delayedIdxesToExpand.isEmpty()) {
m_delayedExpandTimer->start();
}
});
}
auto *model = m_targetTreeView->model();
const int rowCount = model->rowCount({});
// Walk the top level indexes and expand everything
for (int r = 0; r < rowCount; ++r) {
expandRecursively(model->index(r, 0));
}
// Start the timer to expand the not loaded indexes
m_delayedExpandTimer->start();
}
void SearchLineController::expandRecursively(const QModelIndex &idx)
{
if (!idx.isValid() || !m_filterModel || !m_targetTreeView) {
return;
}
auto model = m_targetTreeView->model();
m_targetTreeView->expand(idx);
const int rowCount = model->rowCount(idx);
for (int i = 0; i < rowCount; ++i) {
auto childIdx = model->index(i, 0, idx);
if (!childIdx.isValid()) {
continue;
}
// The value might not be there, store it for delayed expansion
const auto state = childIdx.data(RemoteModelRole::LoadingState).value<RemoteModelNodeState::NodeStates>();
if (state & RemoteModelNodeState::Empty) {
m_delayedIdxesToExpand << childIdx;
} else {
expandRecursively(childIdx);
}
}
}
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