qt-creator/src/plugins/autotest/testtreeview.cpp

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** Copyright (C) 2016 The Qt Company Ltd.
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#include "autotestconstants.h"
#include "testtreeitem.h"
#include "testtreemodel.h"
#include "testtreeview.h"

#include <coreplugin/coreconstants.h>
#include <coreplugin/icontext.h>
#include <coreplugin/icore.h>

namespace Autotest {
namespace Internal {

TestTreeView::TestTreeView(QWidget *parent)
    : NavigationTreeView(parent),
      m_context(new Core::IContext(this))
{
    setExpandsOnDoubleClick(false);
    m_context->setWidget(this);
    m_context->setContext(Core::Context(Constants::AUTOTEST_CONTEXT));
    Core::ICore::addContextObject(m_context);
}

void TestTreeView::selectAll()
{
    changeCheckStateAll(Qt::Checked);
}

void TestTreeView::deselectAll()
{
    changeCheckStateAll(Qt::Unchecked);
}

// this avoids the re-evaluation of parent nodes when modifying the child nodes (setData())
void TestTreeView::changeCheckStateAll(const Qt::CheckState checkState)
{
    const TestTreeModel *model = TestTreeModel::instance();

    for (int rootRow = 0; rootRow < model->rowCount(rootIndex()); ++rootRow) {
        QModelIndex currentRootIndex = model->index(rootRow, 0, rootIndex());
        if (!currentRootIndex.isValid())
            return;
        int count = model->rowCount(currentRootIndex);
        QModelIndex last;
        for (int classesRow = 0; classesRow < count; ++classesRow) {
            const QModelIndex classesIndex = model->index(classesRow, 0, currentRootIndex);
            int funcCount = model->rowCount(classesIndex);
            TestTreeItem *item = static_cast<TestTreeItem *>(classesIndex.internalPointer());
            if (item) {
                item->setData(0, checkState, Qt::CheckStateRole);
                if (!item->childCount())
                    last = classesIndex;
            }
            for (int functionRow = 0; functionRow < funcCount; ++functionRow) {
                last = model->index(functionRow, 0, classesIndex);
                TestTreeItem *item = static_cast<TestTreeItem *>(last.internalPointer());
                if (item)
                    item->setData(0, checkState, Qt::CheckStateRole);
            }
        }
        if (count == 0) {
            if (auto item = static_cast<TestTreeItem *>(currentRootIndex.internalPointer()))
                item->setData(0, checkState, Qt::CheckStateRole);
        }
        emit dataChanged(currentRootIndex, last);
    }
}

} // namespace Internal
} // namespace Autotest