1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "selectsignaldialog_p.h"
#include "ui_selectsignaldialog.h"
#include <QtDesigner/abstractformeditor.h>
#include <QtDesigner/abstractpromotioninterface.h>
#include "abstractintrospection_p.h"
#include "metadatabase_p.h"
#include "widgetdatabase_p.h"
#include <QtWidgets/qapplication.h>
#include <QtWidgets/qpushbutton.h>
#include <QtGui/qscreen.h>
#include <QtGui/qstandarditemmodel.h>
#include <QtCore/qitemselectionmodel.h>
#include <QtCore/qlist.h>
#include <QtCore/qvariant.h>
#include <algorithm>
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
enum { MethodRole = Qt::UserRole + 1 };
using Methods = QList<SelectSignalDialog::Method>;
SelectSignalDialog::SelectSignalDialog(QWidget *parent)
: QDialog(parent)
, m_ui(new QT_PREPEND_NAMESPACE(Ui)::SelectSignalDialog)
, m_model(new QStandardItemModel(0, 1, this))
{
m_ui->setupUi(this);
m_okButton = m_ui->buttonBox->button(QDialogButtonBox::Ok);
m_ui->signalList->setModel(m_model);
connect(m_ui->signalList->selectionModel(), &QItemSelectionModel::currentChanged,
this, &SelectSignalDialog::currentChanged);
connect(m_ui->signalList, &QTreeView::activated,
this, &SelectSignalDialog::activated);
const QRect availableGeometry = screen()->geometry();
resize(availableGeometry.width() / 5, availableGeometry.height() / 2);
}
SelectSignalDialog::~SelectSignalDialog()
{
delete m_ui;
}
SelectSignalDialog::Method SelectSignalDialog::selectedMethod() const
{
return methodFromIndex(m_ui->signalList->currentIndex());
}
SelectSignalDialog::Method SelectSignalDialog::methodFromIndex(const QModelIndex &index) const
{
if (index.isValid()) {
const QStandardItem *item = m_model->itemFromIndex(index);
const QVariant data = item->data(MethodRole);
if (data.canConvert<Method>())
return data.value<Method>();
}
return Method();
}
static QStandardItem *createTopLevelItem(const QString &text)
{
QStandardItem *result = new QStandardItem(text);
result->setFlags(Qt::ItemIsEnabled);
return result;
}
static bool signatureLessThan(const SelectSignalDialog::Method &m1, const SelectSignalDialog::Method &m2)
{
return m1.signature.compare(m2.signature) < 0;
}
// Append a class with alphabetically sorted methods to the model
static void appendClass(const QString &className, Methods methods, QStandardItemModel *model)
{
if (methods.isEmpty())
return;
std::sort(methods.begin(), methods.end(), signatureLessThan);
QStandardItem *topLevelItem = createTopLevelItem(className);
model->appendRow(topLevelItem);
for (const SelectSignalDialog::Method &m : std::as_const(methods)) {
QStandardItem *item = new QStandardItem(m.signature);
item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
item->setData(QVariant::fromValue(m), MethodRole);
topLevelItem->appendRow(item);
}
}
static QString declaredInClass(const QDesignerMetaObjectInterface *metaObject, const QString &member)
{
// Find class whose superclass does not contain the method.
const QDesignerMetaObjectInterface *meta = metaObject;
for (;;) {
const QDesignerMetaObjectInterface *tmpMeta = meta->superClass();
if (tmpMeta == nullptr)
break;
if (tmpMeta->indexOfMethod(member) == -1)
break;
meta = tmpMeta;
}
return meta->className();
}
static inline QString msgNoSignals()
{
return QCoreApplication::translate("QDesignerTaskMenu", "no signals available");
}
void SelectSignalDialog::populate(QDesignerFormEditorInterface *core, QObject *object,
const QString &defaultSignal)
{
m_okButton->setEnabled(false);
populateModel(core, object);
if (m_model->rowCount() == 0) {
m_model->appendRow(createTopLevelItem(msgNoSignals()));
return;
}
m_ui->signalList->expandAll();
m_ui->signalList->resizeColumnToContents(0);
QModelIndex selectedIndex;
if (defaultSignal.isEmpty()) {
selectedIndex = m_model->index(0, 0, m_model->index(0, 0, QModelIndex())); // first method
} else {
const auto items = m_model->findItems(defaultSignal, Qt::MatchExactly | Qt::MatchRecursive, 0);
if (!items.isEmpty())
selectedIndex = m_model->indexFromItem(items.constFirst());
}
if (selectedIndex.isValid())
m_ui->signalList->setCurrentIndex(selectedIndex);
}
void SelectSignalDialog::populateModel(QDesignerFormEditorInterface *core, QObject *object)
{
m_model->removeRows(0, m_model->rowCount());
// Populate methods list in reverse order, starting from derived class.
if (object->isWidgetType() && qobject_cast<WidgetDataBase *>(core->widgetDataBase())) {
const QDesignerWidgetDataBaseInterface *db = core->widgetDataBase();
const QString promotedClassName = promotedCustomClassName(core, static_cast<QWidget *>(object));
const int index = db->indexOfClassName(promotedClassName);
if (index >= 0) {
Methods methods;
WidgetDataBaseItem* item = static_cast<WidgetDataBaseItem*>(db->item(index));
const QStringList fakeSignals = item->fakeSignals();
for (const QString &fakeSignal : fakeSignals)
methods.append(SelectSignalDialog::Method(promotedClassName, fakeSignal));
appendClass(promotedClassName, methods, m_model);
}
}
// fake signals
if (qdesigner_internal::MetaDataBase *metaDataBase
= qobject_cast<qdesigner_internal::MetaDataBase *>(core->metaDataBase())) {
Methods methods;
qdesigner_internal::MetaDataBaseItem *item = metaDataBase->metaDataBaseItem(object);
Q_ASSERT(item);
const QStringList fakeSignals = item->fakeSignals();
for (const QString &fakeSignal : fakeSignals)
methods.append(SelectSignalDialog::Method(item->customClassName(), fakeSignal));
appendClass(item->customClassName(), methods, m_model);
}
// "real" signals
if (const QDesignerMetaObjectInterface *metaObject = core->introspection()->metaObject(object)) {
QString lastClassName;
Methods methods;
for (int i = metaObject->methodCount() - 1; i >= 0; --i) {
const QDesignerMetaMethodInterface *metaMethod = metaObject->method(i);
if (metaMethod->methodType() == QDesignerMetaMethodInterface::Signal) {
const QString signature = metaMethod->signature();
const QString className = declaredInClass(metaObject, signature);
if (lastClassName.isEmpty()) {
lastClassName = className;
} else if (className != lastClassName) {
appendClass(lastClassName, methods, m_model);
lastClassName = className;
methods.clear();
}
methods.append(SelectSignalDialog::Method(className, signature,
metaMethod->parameterNames()));
}
}
appendClass(lastClassName, methods, m_model);
}
}
void SelectSignalDialog::activated(const QModelIndex &index)
{
if (methodFromIndex(index).isValid())
m_okButton->animateClick();
}
void SelectSignalDialog::currentChanged(const QModelIndex ¤t, const QModelIndex &)
{
m_okButton->setEnabled(methodFromIndex(current).isValid());
}
} // namespace qdesigner_internal
QT_END_NAMESPACE
#include "moc_selectsignaldialog_p.cpp"
|
