1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Designer of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL-EXCEPT$
9** Commercial License Usage
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17** GNU General Public License Usage
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20** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
21** included in the packaging of this file. Please review the following
22** information to ensure the GNU General Public License requirements will
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25** $QT_END_LICENSE$
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27****************************************************************************/
28
29#include "widgetbox.h"
30#include "widgetboxtreewidget.h"
31#include "widgetbox_dnditem.h"
32
33#include <QtDesigner/abstractformeditor.h>
34#include <QtDesigner/abstractformwindowmanager.h>
35
36#include <iconloader_p.h>
37#include <qdesigner_utils_p.h>
38
39#include <QtGui/qevent.h>
40#include <QtWidgets/qboxlayout.h>
41#include <QtWidgets/qapplication.h>
42#include <QtWidgets/qtoolbar.h>
43#include <QtWidgets/qlineedit.h>
44#include <QtGui/qicon.h>
45
46QT_BEGIN_NAMESPACE
47
48namespace qdesigner_internal {
49
50/* WidgetBoxFilterLineEdit: This widget should never have initial focus
51 * (ie, be the first widget of a dialog, else, the hint cannot be displayed.
52 * As it is the only focusable control in the widget box, it clears the focus
53 * policy and focusses explicitly on click only (note that setting Qt::ClickFocus
54 * is not sufficient for that as an ActivationFocus will occur). */
55
56class WidgetBoxFilterLineEdit : public QLineEdit {
57public:
58 explicit WidgetBoxFilterLineEdit(QWidget *parent = nullptr) : QLineEdit(parent), m_defaultFocusPolicy(focusPolicy())
59 { setFocusPolicy(Qt::NoFocus); }
60
61protected:
62 void mousePressEvent(QMouseEvent *event) override;
63 void focusInEvent(QFocusEvent *e) override;
64
65private:
66 const Qt::FocusPolicy m_defaultFocusPolicy;
67};
68
69void WidgetBoxFilterLineEdit::mousePressEvent(QMouseEvent *e)
70{
71 if (!hasFocus()) // Explicitly focus on click.
72 setFocus(Qt::OtherFocusReason);
73 QLineEdit::mousePressEvent(e);
74}
75
76void WidgetBoxFilterLineEdit::focusInEvent(QFocusEvent *e)
77{
78 // Refuse the focus if the mouse it outside. In addition to the mouse
79 // press logic, this prevents a re-focussing which occurs once
80 // we actually had focus
81 const Qt::FocusReason reason = e->reason();
82 if (reason == Qt::ActiveWindowFocusReason || reason == Qt::PopupFocusReason) {
83 const QPoint mousePos = mapFromGlobal(QCursor::pos());
84 const bool refuse = !geometry().contains(mousePos);
85 if (refuse) {
86 e->ignore();
87 return;
88 }
89 }
90 QLineEdit::focusInEvent(e);
91}
92
93WidgetBox::WidgetBox(QDesignerFormEditorInterface *core, QWidget *parent, Qt::WindowFlags flags)
94 : QDesignerWidgetBox(parent, flags),
95 m_core(core),
96 m_view(new WidgetBoxTreeWidget(m_core))
97{
98
99 QVBoxLayout *l = new QVBoxLayout(this);
100 l->setContentsMargins(QMargins());
101 l->setSpacing(0);
102
103 // Prevent the filter from grabbing focus since Our view has Qt::NoFocus
104 QToolBar *toolBar = new QToolBar(this);
105 QLineEdit *filterWidget = new WidgetBoxFilterLineEdit(toolBar);
106 filterWidget->setPlaceholderText(tr("Filter"));
107 filterWidget->setClearButtonEnabled(true);
108 connect(filterWidget, &QLineEdit::textChanged, m_view, &WidgetBoxTreeWidget::filter);
109 toolBar->addWidget(filterWidget);
110 l->addWidget(toolBar);
111
112 // View
113 connect(m_view, &WidgetBoxTreeWidget::pressed,
114 this, &WidgetBox::handleMousePress);
115 l->addWidget(m_view);
116
117 setAcceptDrops (true);
118}
119
120WidgetBox::~WidgetBox() = default;
121
122QDesignerFormEditorInterface *WidgetBox::core() const
123{
124 return m_core;
125}
126
127void WidgetBox::handleMousePress(const QString &name, const QString &xml, const QPoint &global_mouse_pos)
128{
129 if (QApplication::mouseButtons() != Qt::LeftButton)
130 return;
131
132 DomUI *ui = xmlToUi(name, xml, true);
133 if (ui == nullptr)
134 return;
135 QList<QDesignerDnDItemInterface*> item_list;
136 item_list.append(new WidgetBoxDnDItem(core(), ui, global_mouse_pos));
137 m_core->formWindowManager()->dragItems(item_list);
138}
139
140int WidgetBox::categoryCount() const
141{
142 return m_view->categoryCount();
143}
144
145QDesignerWidgetBoxInterface::Category WidgetBox::category(int cat_idx) const
146{
147 return m_view->category(cat_idx);
148}
149
150void WidgetBox::addCategory(const Category &cat)
151{
152 m_view->addCategory(cat);
153}
154
155void WidgetBox::removeCategory(int cat_idx)
156{
157 m_view->removeCategory(cat_idx);
158}
159
160int WidgetBox::widgetCount(int cat_idx) const
161{
162 return m_view->widgetCount(cat_idx);
163}
164
165QDesignerWidgetBoxInterface::Widget WidgetBox::widget(int cat_idx, int wgt_idx) const
166{
167 return m_view->widget(cat_idx, wgt_idx);
168}
169
170void WidgetBox::addWidget(int cat_idx, const Widget &wgt)
171{
172 m_view->addWidget(cat_idx, wgt);
173}
174
175void WidgetBox::removeWidget(int cat_idx, int wgt_idx)
176{
177 m_view->removeWidget(cat_idx, wgt_idx);
178}
179
180void WidgetBox::dropWidgets(const QList<QDesignerDnDItemInterface*> &item_list, const QPoint&)
181{
182 m_view->dropWidgets(item_list);
183}
184
185void WidgetBox::setFileName(const QString &file_name)
186{
187 m_view->setFileName(file_name);
188}
189
190QString WidgetBox::fileName() const
191{
192 return m_view->fileName();
193}
194
195bool WidgetBox::load()
196{
197 return m_view->load(loadMode());
198}
199
200bool WidgetBox::loadContents(const QString &contents)
201{
202 return m_view->loadContents(contents);
203}
204
205bool WidgetBox::save()
206{
207 return m_view->save();
208}
209
210static const QDesignerMimeData *checkDragEvent(QDropEvent * event,
211 bool acceptEventsFromWidgetBox)
212{
213 const QDesignerMimeData *mimeData = qobject_cast<const QDesignerMimeData *>(event->mimeData());
214 if (!mimeData) {
215 event->ignore();
216 return nullptr;
217 }
218 // If desired, ignore a widget box drag and drop, where widget==0.
219 if (!acceptEventsFromWidgetBox) {
220 const bool fromWidgetBox = !mimeData->items().first()->widget();
221 if (fromWidgetBox) {
222 event->ignore();
223 return nullptr;
224 }
225 }
226
227 mimeData->acceptEvent(event);
228 return mimeData;
229}
230
231void WidgetBox::dragEnterEvent (QDragEnterEvent * event)
232{
233 // We accept event originating from the widget box also here,
234 // because otherwise Windows will not show the DnD pixmap.
235 checkDragEvent(event, true);
236}
237
238void WidgetBox::dragMoveEvent(QDragMoveEvent * event)
239{
240 checkDragEvent(event, true);
241}
242
243void WidgetBox::dropEvent(QDropEvent * event)
244{
245 const QDesignerMimeData *mimeData = checkDragEvent(event, false);
246 if (!mimeData)
247 return;
248
249 dropWidgets(mimeData->items(), event->pos());
250 QDesignerMimeData::removeMovedWidgetsFromSourceForm(mimeData->items());
251}
252
253QIcon WidgetBox::iconForWidget(const QString &className, const QString &category) const
254{
255 Widget widgetData;
256 if (!findWidget(this, className, category, &widgetData))
257 return QIcon();
258 return m_view->iconForWidget(widgetData.iconName());
259}
260
261} // namespace qdesigner_internal
262
263QT_END_NAMESPACE
264