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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "widgetbox.h"
#include "widgetboxtreewidget.h"
#include "widgetbox_dnditem.h"
#include <QtDesigner/abstractformeditor.h>
#include <QtDesigner/abstractformwindowmanager.h>
#include <iconloader_p.h>
#include <qdesigner_utils_p.h>
#include <QtGui/qevent.h>
#include <QtWidgets/qboxlayout.h>
#include <QtWidgets/qapplication.h>
#include <QtWidgets/qtoolbar.h>
#include <QtWidgets/qlineedit.h>
#include <QtGui/qicon.h>
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
/* WidgetBoxFilterLineEdit: This widget should never have initial focus
* (ie, be the first widget of a dialog, else, the hint cannot be displayed.
* As it is the only focusable control in the widget box, it clears the focus
* policy and focusses explicitly on click only (note that setting Qt::ClickFocus
* is not sufficient for that as an ActivationFocus will occur). */
class WidgetBoxFilterLineEdit : public QLineEdit {
public:
explicit WidgetBoxFilterLineEdit(QWidget *parent = nullptr) : QLineEdit(parent), m_defaultFocusPolicy(focusPolicy())
{ setFocusPolicy(Qt::NoFocus); }
protected:
void mousePressEvent(QMouseEvent *event) override;
void focusInEvent(QFocusEvent *e) override;
private:
const Qt::FocusPolicy m_defaultFocusPolicy;
};
void WidgetBoxFilterLineEdit::mousePressEvent(QMouseEvent *e)
{
if (!hasFocus()) // Explicitly focus on click.
setFocus(Qt::OtherFocusReason);
QLineEdit::mousePressEvent(e);
}
void WidgetBoxFilterLineEdit::focusInEvent(QFocusEvent *e)
{
// Refuse the focus if the mouse it outside. In addition to the mouse
// press logic, this prevents a re-focussing which occurs once
// we actually had focus
const Qt::FocusReason reason = e->reason();
if (reason == Qt::ActiveWindowFocusReason || reason == Qt::PopupFocusReason) {
const QPoint mousePos = mapFromGlobal(QCursor::pos());
const bool refuse = !geometry().contains(mousePos);
if (refuse) {
e->ignore();
return;
}
}
QLineEdit::focusInEvent(e);
}
WidgetBox::WidgetBox(QDesignerFormEditorInterface *core, QWidget *parent, Qt::WindowFlags flags)
: QDesignerWidgetBox(parent, flags),
m_core(core),
m_view(new WidgetBoxTreeWidget(m_core))
{
QVBoxLayout *l = new QVBoxLayout(this);
l->setContentsMargins(QMargins());
l->setSpacing(0);
// Prevent the filter from grabbing focus since Our view has Qt::NoFocus
QToolBar *toolBar = new QToolBar(this);
QLineEdit *filterWidget = new WidgetBoxFilterLineEdit(toolBar);
filterWidget->setPlaceholderText(tr("Filter"));
filterWidget->setClearButtonEnabled(true);
connect(filterWidget, &QLineEdit::textChanged, m_view, &WidgetBoxTreeWidget::filter);
toolBar->addWidget(filterWidget);
l->addWidget(toolBar);
// View
connect(m_view, &WidgetBoxTreeWidget::pressed,
this, &WidgetBox::handleMousePress);
l->addWidget(m_view);
setAcceptDrops (true);
}
WidgetBox::~WidgetBox() = default;
QDesignerFormEditorInterface *WidgetBox::core() const
{
return m_core;
}
void WidgetBox::handleMousePress(const QString &name, const QString &xml, const QPoint &global_mouse_pos)
{
if (QApplication::mouseButtons() != Qt::LeftButton)
return;
DomUI *ui = xmlToUi(name, xml, true);
if (ui == nullptr)
return;
QList<QDesignerDnDItemInterface*> item_list;
item_list.append(new WidgetBoxDnDItem(core(), ui, global_mouse_pos));
m_core->formWindowManager()->dragItems(item_list);
}
int WidgetBox::categoryCount() const
{
return m_view->categoryCount();
}
QDesignerWidgetBoxInterface::Category WidgetBox::category(int cat_idx) const
{
return m_view->category(cat_idx);
}
void WidgetBox::addCategory(const Category &cat)
{
m_view->addCategory(cat);
}
void WidgetBox::removeCategory(int cat_idx)
{
m_view->removeCategory(cat_idx);
}
int WidgetBox::widgetCount(int cat_idx) const
{
return m_view->widgetCount(cat_idx);
}
QDesignerWidgetBoxInterface::Widget WidgetBox::widget(int cat_idx, int wgt_idx) const
{
return m_view->widget(cat_idx, wgt_idx);
}
void WidgetBox::addWidget(int cat_idx, const Widget &wgt)
{
m_view->addWidget(cat_idx, wgt);
}
void WidgetBox::removeWidget(int cat_idx, int wgt_idx)
{
m_view->removeWidget(cat_idx, wgt_idx);
}
void WidgetBox::dropWidgets(const QList<QDesignerDnDItemInterface*> &item_list, const QPoint&)
{
m_view->dropWidgets(item_list);
}
void WidgetBox::setFileName(const QString &file_name)
{
m_view->setFileName(file_name);
}
QString WidgetBox::fileName() const
{
return m_view->fileName();
}
bool WidgetBox::load()
{
return m_view->load(loadMode());
}
bool WidgetBox::loadContents(const QString &contents)
{
return m_view->loadContents(contents);
}
bool WidgetBox::save()
{
return m_view->save();
}
static const QDesignerMimeData *checkDragEvent(QDropEvent * event,
bool acceptEventsFromWidgetBox)
{
const QDesignerMimeData *mimeData = qobject_cast<const QDesignerMimeData *>(event->mimeData());
if (!mimeData) {
event->ignore();
return nullptr;
}
// If desired, ignore a widget box drag and drop, where widget==0.
if (!acceptEventsFromWidgetBox) {
const bool fromWidgetBox = !mimeData->items().first()->widget();
if (fromWidgetBox) {
event->ignore();
return nullptr;
}
}
mimeData->acceptEvent(event);
return mimeData;
}
void WidgetBox::dragEnterEvent (QDragEnterEvent * event)
{
// We accept event originating from the widget box also here,
// because otherwise Windows will not show the DnD pixmap.
checkDragEvent(event, true);
}
void WidgetBox::dragMoveEvent(QDragMoveEvent * event)
{
checkDragEvent(event, true);
}
void WidgetBox::dropEvent(QDropEvent * event)
{
const QDesignerMimeData *mimeData = checkDragEvent(event, false);
if (!mimeData)
return;
dropWidgets(mimeData->items(), event->position().toPoint());
QDesignerMimeData::removeMovedWidgetsFromSourceForm(mimeData->items());
}
QIcon WidgetBox::iconForWidget(const QString &className, const QString &category) const
{
Widget widgetData;
if (!findWidget(this, className, category, &widgetData))
return QIcon();
return m_view->iconForWidget(widgetData.iconName());
}
} // namespace qdesigner_internal
QT_END_NAMESPACE
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