qt-creator/src/plugins/coreplugin/findplaceholder.cpp

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#include "findplaceholder.h"

#include <extensionsystem/pluginmanager.h>

#include <QVBoxLayout>


using namespace Core;

FindToolBarPlaceHolder *FindToolBarPlaceHolder::m_current = 0;

FindToolBarPlaceHolder::FindToolBarPlaceHolder(QWidget *owner, QWidget *parent)
    : QWidget(parent), m_owner(owner), m_subWidget(0)
{
    setLayout(new QVBoxLayout);
    setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Maximum);
    layout()->setMargin(0);
    ExtensionSystem::PluginManager::addObject(this);
}

FindToolBarPlaceHolder::~FindToolBarPlaceHolder()
{
    ExtensionSystem::PluginManager::removeObject(this);
    if (m_subWidget) {
        m_subWidget->setVisible(false);
        m_subWidget->setParent(0);
    }
    if (m_current == this)
        m_current = 0;
}

QWidget *FindToolBarPlaceHolder::owner() const
{
    return m_owner;
}

/*!
 * Returns if \a widget is a subwidget of the place holder's owner
 */
bool FindToolBarPlaceHolder::isUsedByWidget(QWidget *widget)
{
    QWidget *current = widget;
    while (current) {
        if (current == m_owner)
            return true;
        current = current->parentWidget();
    }
    return false;
}

void FindToolBarPlaceHolder::setWidget(QWidget *widget)
{
    if (m_subWidget) {
        m_subWidget->setVisible(false);
        m_subWidget->setParent(0);
    }
    m_subWidget = widget;
    if (m_subWidget)
        layout()->addWidget(m_subWidget);
}

FindToolBarPlaceHolder *FindToolBarPlaceHolder::getCurrent()
{
    return m_current;
}

void FindToolBarPlaceHolder::setCurrent(FindToolBarPlaceHolder *placeHolder)
{
    m_current = placeHolder;
}