expanding_list_widget.cpp

Go to the documentation of this file.

#include "gui/expanding_list/expanding_list_widget.h"
 
#include "gui/expanding_list/expanding_list_button.h"
#include "gui/expanding_list/expanding_list_item.h"
 
#include <QFrame>
#include <QStyle>
#include <QVBoxLayout>
 
namespace hal
{
 
    ExpandingListWidget::ExpandingListWidget(QWidget* parent)
        : QScrollArea(parent), mContent(new QFrame()), mContentLayout(new QVBoxLayout()),
          mSpacer(new QFrame()), mSelectedButton(nullptr), mOffset(0)
    {
        setFrameStyle(QFrame::NoFrame);
        setWidget(mContent);
        setWidgetResizable(true);
        mContent->setObjectName("content");
        mContent->setFrameStyle(QFrame::NoFrame);
        mContent->setLayout(mContentLayout);
        mContentLayout->setAlignment(Qt::AlignTop);
        mContentLayout->setContentsMargins(0, 0, 0, 0);
        mContentLayout->setSpacing(0);
        mSpacer->setObjectName("spacer");
        mSpacer->setFrameStyle(QFrame::NoFrame);
        mContentLayout->addWidget(mSpacer);
    }
 
    void ExpandingListWidget::appendItem(ExpandingListButton* button, const QString& groupName)
    {
        ExpandingListItem* item = new ExpandingListItem(button);
        QString tag = button->text();
        if (!groupName.isEmpty()) tag.prepend(groupName + ":");
        auto itInsert = mItemMap.insert(tag,item);
        int inx = 0;
        for (auto it=mItemMap.begin(); it!=itInsert; ++it) ++inx;
        mContentLayout->insertWidget(inx,item);
 
        if (!groupName.isEmpty())
            mButtonGroup[groupName].append(item);
        connect(button, &ExpandingListButton::clicked, this, &ExpandingListWidget::handleClicked);
    }
 
    void ExpandingListWidget::clearSelected()
    {
        if (!mSelectedButton) return;
        mSelectedButton->setSelected(false);
        mSelectedButton = nullptr;
    }
 
    void ExpandingListWidget::selectButton(ExpandingListButton* button)
    {
        if (button == mSelectedButton)
            return;
 
        if (!button)
        {
            if (mSelectedButton) clearSelected();
            return;
        }
 
        mSelectedButton = button;
        for (auto it = mItemMap.begin(); it!=mItemMap.end(); ++it)
        {
            ExpandingListItem* item = it.value();
            ExpandingListButton* but = item->button();
            but->setSelected(but == mSelectedButton);
        }
 
        Q_EMIT buttonSelected(button);
    }
 
 
    void ExpandingListWidget::selectFirstItem()
    {
        if (mItemMap.isEmpty()) return;
 
        if (mSelectedButton)
        {
            selectButton(mSelectedButton);
            return;
        }
 
        ExpandingListItem* first = mItemMap.value("Appearance:Style");
        if (!first) first = mItemMap.begin().value();
        selectButton(first->button());
    }
 
    void ExpandingListWidget::repolish()
    {
        QStyle* s = style();
 
        s->unpolish(this);
        s->polish(this);
 
        for (auto it = mItemMap.begin(); it!=mItemMap.end(); ++it)
            it.value()->repolish();
    }
 
    void ExpandingListWidget::handleClicked()
    {
        QObject* obj                  = sender();
        ExpandingListButton* button = static_cast<ExpandingListButton*>(obj);
 
        auto grpIt = mButtonGroup.find(button->text());
        if (grpIt != mButtonGroup.end())
        {
            grpIt->toggleCollapsed(mSelectedButton); // except selected
            return;
        }
 
        selectButton(button);
    }
 
    bool ExpandingListWidget::hasGroup(const QString& groupName) const
    {
        return mButtonGroup.contains(groupName);
    }
 
    void ExpandingListGroup::toggleCollapsed(ExpandingListButton* exceptSelected)
    {
        mCollapsed = !mCollapsed;
        for (ExpandingListItem* item : *this)
        {
            if (mCollapsed)
            {
                if (item->button() != exceptSelected)
                    item->collapse();
            }
            else
                item->expand();
        }
    }
}