qt-creator/src/plugins/coreplugin/dialogs/settingsdialog.cpp

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**
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** GNU General Public License Usage
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** Public License versions 2.0 or 3.0 as published by the Free Software
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#include "settingsdialog.h"

#include <extensionsystem/pluginmanager.h>

#include <QtGui/QHeaderView>
#include <QtGui/QPushButton>

using namespace Core;
using namespace Core::Internal;

SettingsDialog::SettingsDialog(QWidget *parent, const QString &initialCategory,
                               const QString &initialPage)
    : QDialog(parent)
{
    setupUi(this);
    buttonBox->button(QDialogButtonBox::Ok)->setDefault(true);

    connect(buttonBox->button(QDialogButtonBox::Apply), SIGNAL(clicked()), this, SLOT(apply()));

    splitter->setCollapsible(1, false);
    pageTree->header()->setVisible(false);

    connect(pageTree, SIGNAL(currentItemChanged(QTreeWidgetItem *, QTreeWidgetItem *)),
        this, SLOT(pageSelected(QTreeWidgetItem *)));

    QMap<QString, QTreeWidgetItem *> categories;

    QList<IOptionsPage*> pages =
        ExtensionSystem::PluginManager::instance()->getObjects<IOptionsPage>();

    int index = 0;
    foreach (IOptionsPage *page, pages) {
        QTreeWidgetItem *item = new QTreeWidgetItem;
        item->setText(0, page->name());
        item->setData(0, Qt::UserRole, index);

        QStringList categoriesId = page->category().split(QLatin1Char('|'));
        QStringList trCategories = page->trCategory().split(QLatin1Char('|'));
        QString currentCategory = categoriesId.at(0);

        QTreeWidgetItem *treeitem;
        if (!categories.contains(currentCategory)) {
            treeitem = new QTreeWidgetItem(pageTree);
            treeitem->setText(0, trCategories.at(0));
            treeitem->setData(0, Qt::UserRole, index);
            categories.insert(currentCategory, treeitem);
        }

        int catCount = 1;
        while (catCount < categoriesId.count()) {
            if (!categories.contains(currentCategory + QLatin1Char('|') + categoriesId.at(catCount))) {
                treeitem = new QTreeWidgetItem(categories.value(currentCategory));
                currentCategory +=  QLatin1Char('|') + categoriesId.at(catCount);
                treeitem->setText(0, trCategories.at(catCount));
                treeitem->setData(0, Qt::UserRole, index);
                categories.insert(currentCategory, treeitem);
            } else {
                currentCategory +=  QLatin1Char('|') + categoriesId.at(catCount);
            }
            ++catCount;
        }

        categories.value(currentCategory)->addChild(item);

        m_pages.append(page);
        stackedPages->addWidget(page->createPage(stackedPages));

        if (page->name() == initialPage && currentCategory == initialCategory) {
            stackedPages->setCurrentIndex(stackedPages->count());
            pageTree->setCurrentItem(item);
        }

        index++;
    }

    QList<int> sizes;
    sizes << 150 << 300;
    splitter->setSizes(sizes);

    splitter->setStretchFactor(splitter->indexOf(pageTree), 0);
    splitter->setStretchFactor(splitter->indexOf(layoutWidget), 1);
}

SettingsDialog::~SettingsDialog()
{
}

void SettingsDialog::pageSelected(QTreeWidgetItem *)
{
    QTreeWidgetItem *item = pageTree->currentItem();
    int index = item->data(0, Qt::UserRole).toInt();
    stackedPages->setCurrentIndex(index);
}

void SettingsDialog::accept()
{
    foreach (IOptionsPage *page, m_pages) {
        page->apply();
        page->finish();
    }
    done(QDialog::Accepted);
}

void SettingsDialog::reject()
{
    foreach (IOptionsPage *page, m_pages)
        page->finish();
    done(QDialog::Rejected);
}

void SettingsDialog::apply()
{
    foreach (IOptionsPage *page, m_pages)
        page->apply();
}