cxDynamicMainWindowWidgets.cpp

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#include "cxDynamicMainWindowWidgets.h"
#include <QDockWidget>
#include <QMainWindow>
#include <QScrollArea>
#include <QToolBar>
#include <QMenu>
#include <iostream>
#include "cxLogger.h"
#include "cxStateService.h"

namespace cx
{

DynamicMainWindowWidgets::DynamicMainWindowWidgets(QMainWindow* mainWindow) :
        mMainWindow(mainWindow)
{
        // use dummy toolbar to force default preset toolbars to the left
        mFirstDummyToolbar = new QToolBar;
        mFirstDummyToolbar->setObjectName("dummy_toolbar");
//      mFirstDummyToolbar->hide();
        mMainWindow->addToolBar(mFirstDummyToolbar);
}

QDockWidget* DynamicMainWindowWidgets::addAsDockWidget(QWidget* widget, QString groupname, QObject* owningPlugin)
{
        QDockWidget* dockWidget = this->createDockWidget(widget);
        mMainWindow->addDockWidget(Qt::LeftDockWidgetArea, dockWidget);

        this->tabifyWidget(dockWidget);

        DynamicWidget item;
        item.mWidget = dockWidget;
        dockWidget->setVisible(false); // default visibility

        item.mGroup = groupname;
        item.mName = widget->windowTitle();
        mMainWindow->restoreDockWidget(dockWidget); // restore if added after construction

        item.mOwningService = owningPlugin;

        connect(dockWidget->toggleViewAction(), &QAction::triggered, this, &DynamicMainWindowWidgets::onWidgetActionTriggered);

        mItems.push_back(item);
        return dockWidget;
}

void DynamicMainWindowWidgets::registerToolBar(QToolBar* toolbar, QString groupname)
{
        DynamicWidget item;
        item.mWidget = toolbar;
        item.mGroup = groupname;
        item.mName = toolbar->windowTitle();
        mItems.push_back(item);

        mMainWindow->addToolBar(toolbar);
        // this avoids overpopulation of gui at startup, and is the same functionality as for dockwidgets.
        // also gives correct size of mainwindow at startup.
        toolbar->hide();
}

QDockWidget* DynamicMainWindowWidgets::createDockWidget(QWidget* widget)
{
        QScrollArea* scroller = this->addVerticalScroller(widget);
        QDockWidget* dockWidget = new QDockWidget(widget->windowTitle(), mMainWindow);
        connect(widget, &QWidget::windowTitleChanged, this, &DynamicMainWindowWidgets::onConsoleWindowTitleChanged);
        dockWidget->setObjectName(widget->objectName() + "DockWidget");
        dockWidget->setFocusPolicy(Qt::StrongFocus); // we really want to focus on the embedded widget, see focusInsideDockWidget()
        dockWidget->setWidget(scroller);
        return dockWidget;
}

void DynamicMainWindowWidgets::showWidget(QString name)
{
        for (unsigned i=0; i<mItems.size(); ++i)
        {
                DynamicWidget item = mItems[i];

                if (item.mName != name)
                {
                        continue;
                }

                QDockWidget* dockWidget = dynamic_cast<QDockWidget*>(item.mWidget);
                if (!dockWidget)
                        continue;

                dockWidget->show();
                dockWidget->raise();
        }
}

void DynamicMainWindowWidgets::restoreFrom(const Desktop& desktop)
{
        this->hideAll();
        mMainWindow->restoreState(desktop.mMainWindowState);

        for (unsigned i=0; i<desktop.mPresets.size(); ++i)
                this->restorePreset(desktop.mPresets[i]);
}

void DynamicMainWindowWidgets::restorePreset(const Desktop::Preset& preset)
{
        QToolBar* tb = mMainWindow->findChild<QToolBar*>(preset.name);
        if (tb)
        {
                // add before dummy
                mMainWindow->removeToolBar(tb);
                mMainWindow->insertToolBar(mFirstDummyToolbar, tb);
                tb->show();
                return;
        }

        QDockWidget* dw = mMainWindow->findChild<QDockWidget*>(preset.name+"DockWidget");
        if (dw)
        {
                dw->show();
                if (preset.tabbed)
                {
                        QDockWidget* first = this->getFirstDockWidget(Qt::DockWidgetArea(preset.position));
                        if (first)
                                mMainWindow->tabifyDockWidget(first, dw);
                        else
                                mMainWindow->addDockWidget(Qt::DockWidgetArea(preset.position), dw);
                }
                else
                {
                        mMainWindow->addDockWidget(Qt::DockWidgetArea(preset.position), dw);
                }
                return;
        }

        CX_LOG_WARNING() << QString("Attempted to restore a nonexitent preset widget: [%1]").arg(preset.name);
}

void DynamicMainWindowWidgets::onWidgetActionTriggered(bool checked)
{
        QAction* action = dynamic_cast<QAction*>(sender());
        if (!action)
                return;
        QWidget* widget = dynamic_cast<QWidget*>(action->parent());
        if (!widget)
                return;

        // if dockwidgets is tabbed, this ensures that the widget is shown instead
        // of merely showing the tab.
        if (checked)
                widget->raise();
}

void DynamicMainWindowWidgets::owningServiceRemoved(QObject* service)
{
        for (unsigned i=0; i<mItems.size(); )
        {
                DynamicWidget item = mItems[i];

                if (item.mOwningService != service)
                {
                        ++i;
                        continue;
                }
                else
                {
                        mItems.erase(mItems.begin()+i);

                        QDockWidget* dockWidget = dynamic_cast<QDockWidget*>(item.mWidget);
                        if (dockWidget)
                                mMainWindow->removeDockWidget(dockWidget);
                }
        }
}

void DynamicMainWindowWidgets::onConsoleWindowTitleChanged(const QString & title)
{
        QWidget* widget = dynamic_cast<QWidget*>(sender());

        for (int i=0; i<3; ++i)
        {
                if (!widget)
                        return;
                QDockWidget* dockWidget = dynamic_cast<QDockWidget*>(widget);
                if (dockWidget)
                {
                        dockWidget->setWindowTitle(title);
                        return;
                }
                widget = widget->parentWidget();
        }
}

QScrollArea* DynamicMainWindowWidgets::addVerticalScroller(QWidget *widget)
{
        QScrollArea* scroller = new QScrollArea(NULL);
        scroller->setWidget(widget);
        widget->setParent(scroller);
        scroller->setWidgetResizable(true);
        scroller->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
        QSizePolicy policy = scroller->sizePolicy();
        policy.setHorizontalPolicy(QSizePolicy::Minimum);
        scroller->setSizePolicy(policy);
        return scroller;
}

void DynamicMainWindowWidgets::tabifyWidget(QDockWidget* dockWidget)
{
        QDockWidget* widget = this->getFirstDockWidget(Qt::LeftDockWidgetArea);

        if (widget)
                mMainWindow->tabifyDockWidget(widget, dockWidget);
}

QDockWidget* DynamicMainWindowWidgets::getFirstDockWidget(Qt::DockWidgetArea area)
{
        for (unsigned i=0; i<mItems.size(); ++i)
        {
                QDockWidget* widget = dynamic_cast<QDockWidget*>(mItems[i].mWidget);
                if (!widget)
                        continue;
                if (mMainWindow->dockWidgetArea(widget) == Qt::LeftDockWidgetArea)
                        return widget;
        }
        return NULL;
}

void DynamicMainWindowWidgets::hideAll()
{
        for (unsigned i=0; i<mItems.size(); ++i)
        {
                mItems[i].mWidget->hide();

                QToolBar* toolbar = dynamic_cast<QToolBar*>(mItems[i].mWidget);
                if (toolbar)
                {
                        // move to end of list (i.e. after dummy)
                        mMainWindow->removeToolBar(toolbar);
                        mMainWindow->addToolBar(toolbar);
                }
        }

}

void DynamicMainWindowWidgets::addToWidgetGroupMap(ActionGroupMap& groups, QAction* action, QString groupname)
{
        action->setMenuRole(QAction::NoRole);

        if (!groups.count(groupname))
        {
                QActionGroup* group = new QActionGroup(this);
                group->setExclusive(false);
                groups[groupname] = group;

                QAction* heading = new QAction(groupname, this);
                heading->setDisabled(true);
                groups[groupname]->addAction(heading);
        }

        groups[groupname]->addAction(action);
}

QMenu* DynamicMainWindowWidgets::createPopupMenu()
{
        // temp attempt: split menu into two parts: widgets and toolbars. - fix

        QMenu* popupMenu = new QMenu;

        ActionGroupMap groups;
        ActionGroupMap tgroups;
        for (unsigned i=0; i<mItems.size(); ++i)
        {
                QDockWidget* widget = dynamic_cast<QDockWidget*>(mItems[i].mWidget);
                if (widget)
                        this->addToWidgetGroupMap(groups, widget->toggleViewAction(), mItems[i].mGroup);
                QToolBar* toolbar = dynamic_cast<QToolBar*>(mItems[i].mWidget);
                if (toolbar)
                        this->addToWidgetGroupMap(tgroups, toolbar->toggleViewAction(), mItems[i].mGroup);
        }

        QMenu* widgets = popupMenu->addMenu("Widgets");

        for(std::map<QString, QActionGroup*>::iterator it = groups.begin(); it != groups.end(); ++it)
        {
                widgets->addSeparator();
                widgets->addActions(it->second->actions());
        }

        QMenu* toolbars = popupMenu->addMenu("Toolbars");

        for(std::map<QString, QActionGroup*>::iterator it = tgroups.begin(); it != tgroups.end(); ++it)
        {
                toolbars->addSeparator();
                toolbars->addActions(it->second->actions());
        }

        return popupMenu;
}

} // namespace cx