source: trunk/src/scripttools/debugging/qscriptdebuggerlocalswidget.cpp@ 561

Last change on this file since 561 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
File size: 14.5 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtSCriptTools module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qscriptdebuggerlocalswidget_p.h"
43#include "qscriptdebuggerlocalswidgetinterface_p_p.h"
44#include "qscriptdebuggerlocalsmodel_p.h"
45#include "qscriptcompletionproviderinterface_p.h"
46#include "qscriptcompletiontaskinterface_p.h"
47
48#include <QtCore/qdebug.h>
49#include <QtGui/qheaderview.h>
50#include <QtGui/qcompleter.h>
51#include <QtGui/qstringlistmodel.h>
52#include <QtGui/qtreeview.h>
53#include <QtGui/qboxlayout.h>
54#include <QtGui/qsortfilterproxymodel.h>
55#include <QtGui/qlineedit.h>
56#include <QtGui/qstyleditemdelegate.h>
57#include <QtGui/qevent.h>
58#include <QtGui/qmessagebox.h>
59#include <QtScript/qscriptengine.h>
60
61QT_BEGIN_NAMESPACE
62
63namespace {
64
65class CustomProxyModel : public QSortFilterProxyModel
66{
67public:
68 CustomProxyModel(QObject *parent = 0)
69 : QSortFilterProxyModel(parent) {}
70
71 bool hasChildren(const QModelIndex &parent) const
72 {
73 QModelIndex sourceParent = mapToSource(parent);
74 if (parent.isValid() && !sourceParent.isValid())
75 return false;
76 return sourceModel()->hasChildren(sourceParent);
77 }
78};
79
80} // namespace
81
82class QScriptDebuggerLocalsWidgetPrivate
83 : public QScriptDebuggerLocalsWidgetInterfacePrivate
84{
85 Q_DECLARE_PUBLIC(QScriptDebuggerLocalsWidget)
86public:
87 QScriptDebuggerLocalsWidgetPrivate();
88 ~QScriptDebuggerLocalsWidgetPrivate();
89
90 void complete(QLineEdit *le);
91
92 // private slots
93 void _q_onCompletionTaskFinished();
94 void _q_insertCompletion(const QString &text);
95 void _q_expandIndex(const QModelIndex &index);
96
97 QTreeView *view;
98 QPointer<QLineEdit> completingEditor;
99 QCompleter *completer;
100 CustomProxyModel *proxy;
101};
102
103QScriptDebuggerLocalsWidgetPrivate::QScriptDebuggerLocalsWidgetPrivate()
104{
105 completingEditor = 0;
106 completer = 0;
107 proxy = 0;
108}
109
110QScriptDebuggerLocalsWidgetPrivate::~QScriptDebuggerLocalsWidgetPrivate()
111{
112}
113
114void QScriptDebuggerLocalsWidgetPrivate::complete(QLineEdit *le)
115{
116 Q_Q(QScriptDebuggerLocalsWidget);
117 QScriptCompletionTaskInterface *task = 0;
118 // ### need to pass the current frame #
119 task = completionProvider->createCompletionTask(
120 le->text(), le->cursorPosition(),
121 q->localsModel()->frameIndex(), /*options=*/0);
122 QObject::connect(task, SIGNAL(finished()),
123 q, SLOT(_q_onCompletionTaskFinished()));
124 completingEditor = le;
125 task->start();
126}
127
128void QScriptDebuggerLocalsWidgetPrivate::_q_onCompletionTaskFinished()
129{
130 Q_Q(QScriptDebuggerLocalsWidget);
131 QScriptCompletionTaskInterface *task = 0;
132 task = qobject_cast<QScriptCompletionTaskInterface*>(q_func()->sender());
133 if (!completingEditor) {
134 task->deleteLater();
135 return;
136 }
137
138 if (task->resultCount() == 1) {
139 // do the completion right away
140 QString completion = task->resultAt(0);
141 completion.append(task->appendix());
142 QString tmp = completingEditor->text();
143 tmp.remove(task->position(), task->length());
144 tmp.insert(task->position(), completion);
145 completingEditor->setText(tmp);
146 completingEditor = 0;
147 } else if (task->resultCount() > 1) {
148 // popup completion
149 if (!completer) {
150 completer = new QCompleter(q);
151 completer->setCompletionMode(QCompleter::PopupCompletion);
152 completer->setCaseSensitivity(Qt::CaseSensitive);
153 completer->setWrapAround(false);
154 QObject::connect(completer, SIGNAL(activated(QString)),
155 q, SLOT(_q_insertCompletion(QString)));
156 }
157 QStringListModel *model = qobject_cast<QStringListModel*>(completer->model());
158 if (!model) {
159 model = new QStringListModel(q);
160 completer->setModel(model);
161 }
162 QStringList strings;
163 for (int i = 0; i < task->resultCount(); ++i)
164 strings.append(task->resultAt(i));
165 model->setStringList(strings);
166 QString prefix = completingEditor->text().mid(task->position(), task->length());
167 completer->setCompletionPrefix(prefix);
168 completingEditor->setCompleter(completer);
169 // we want to handle the insertion ourselves
170 QObject::disconnect(completer, 0, completingEditor, 0);
171 completer->complete();
172 }
173 task->deleteLater();
174}
175
176void QScriptDebuggerLocalsWidgetPrivate::_q_insertCompletion(const QString &text)
177{
178 Q_ASSERT(completingEditor != 0);
179 QString tmp = completingEditor->text();
180 tmp.insert(completingEditor->cursorPosition(), text.mid(completer->completionPrefix().length()));
181 completingEditor->setText(tmp);
182 completingEditor = 0;
183}
184
185void QScriptDebuggerLocalsWidgetPrivate::_q_expandIndex(const QModelIndex &index)
186{
187 view->expand(proxy->mapFromSource(index));
188}
189
190class QScriptDebuggerLocalsItemDelegate
191 : public QStyledItemDelegate
192{
193 Q_OBJECT
194public:
195 QScriptDebuggerLocalsItemDelegate(QObject *parent = 0);
196
197 QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
198 void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
199 void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
200
201 bool eventFilter(QObject *watched, QEvent *event);
202
203private Q_SLOTS:
204 void validateInput(const QString &text)
205 {
206 QWidget *editor = qobject_cast<QWidget*>(sender());
207 QPalette pal = editor->palette();
208 QColor col;
209 bool ok = (QScriptEngine::checkSyntax(text).state() == QScriptSyntaxCheckResult::Valid);
210 if (ok) {
211 col = Qt::white;
212 } else {
213 QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax(
214 text + QLatin1Char('\n'));
215 if (result.state() == QScriptSyntaxCheckResult::Intermediate)
216 col = QColor(255, 240, 192);
217 else
218 col = QColor(255, 102, 102);
219 }
220 pal.setColor(QPalette::Active, QPalette::Base, col);
221 editor->setPalette(pal);
222 }
223
224private:
225 static const QWidget *widget(const QStyleOptionViewItem &option)
226 {
227 if (const QStyleOptionViewItemV3 *v3 = qstyleoption_cast<const QStyleOptionViewItemV3 *>(&option))
228 return v3->widget;
229 return 0;
230 }
231};
232
233QScriptDebuggerLocalsItemDelegate::QScriptDebuggerLocalsItemDelegate(
234 QObject *parent)
235 : QStyledItemDelegate(parent)
236{
237}
238
239QWidget *QScriptDebuggerLocalsItemDelegate::createEditor(
240 QWidget *parent, const QStyleOptionViewItem &option,
241 const QModelIndex &index) const
242{
243 QWidget *editor = QStyledItemDelegate::createEditor(parent, option, index);
244 if (index.column() == 1) {
245 // value
246 QLineEdit *le = qobject_cast<QLineEdit*>(editor);
247 if (le) {
248 QObject::connect(le, SIGNAL(textEdited(QString)),
249 this, SLOT(validateInput(QString)));
250 }
251 }
252 return editor;
253}
254
255bool QScriptDebuggerLocalsItemDelegate::eventFilter(QObject *watched, QEvent *event)
256{
257 QLineEdit *le = qobject_cast<QLineEdit*>(watched);
258 if (!le)
259 return QStyledItemDelegate::eventFilter(watched, event);
260
261 QScriptDebuggerLocalsWidget *localsWidget = qobject_cast<QScriptDebuggerLocalsWidget*>(parent());
262 Q_ASSERT(localsWidget != 0);
263 QScriptDebuggerLocalsWidgetPrivate *lvp =
264 reinterpret_cast<QScriptDebuggerLocalsWidgetPrivate*>(
265 QScriptDebuggerLocalsWidgetPrivate::get(localsWidget));
266
267 if ((event->type() == QEvent::FocusIn) && lvp->completingEditor) {
268 // because QLineEdit insists on being difficult...
269 return true;
270 }
271
272 if (event->type() != QEvent::KeyPress)
273 return QStyledItemDelegate::eventFilter(watched, event);
274 QKeyEvent *ke = static_cast<QKeyEvent*>(event);
275 if ((ke->key() == Qt::Key_Enter) || (ke->key() == Qt::Key_Return)) {
276 if (QScriptEngine::checkSyntax(le->text()).state() != QScriptSyntaxCheckResult::Valid) {
277 // ignore when script contains syntax error
278 return true;
279 }
280 }
281 if (ke->key() != Qt::Key_Tab)
282 return QStyledItemDelegate::eventFilter(watched, event);
283
284 // trigger completion
285 lvp->complete(le);
286 return true;
287}
288
289void QScriptDebuggerLocalsItemDelegate::setModelData(
290 QWidget *editor, QAbstractItemModel *model,
291 const QModelIndex &index) const
292{
293 if (index.column() == 1) {
294 // check that the syntax is OK
295 QString expression = qobject_cast<QLineEdit*>(editor)->text();
296 if (QScriptEngine::checkSyntax(expression).state() != QScriptSyntaxCheckResult::Valid)
297 return;
298 }
299 QStyledItemDelegate::setModelData(editor, model, index);
300}
301
302void QScriptDebuggerLocalsItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
303 const QModelIndex &index) const
304{
305 QStyledItemDelegate::paint(painter, option, index);
306#if 0
307 QModelIndex parent = index.parent();
308 if (parent.isValid()) {
309 QStyledItemDelegate::paint(painter, option, index);
310 } else {
311 // this is a top-level item.
312 const QTreeView *view = qobject_cast<const QTreeView*>(widget(option));
313 Q_ASSERT(view != 0);
314
315 QStyleOptionButton buttonOption;
316
317 buttonOption.state = option.state;
318#ifdef Q_WS_MAC
319 buttonOption.state |= QStyle::State_Raised;
320#endif
321 buttonOption.state &= ~QStyle::State_HasFocus;
322
323 buttonOption.rect = option.rect;
324 buttonOption.palette = option.palette;
325 buttonOption.features = QStyleOptionButton::None;
326 view->style()->drawControl(QStyle::CE_PushButton, &buttonOption, painter, view);
327
328 QStyleOption branchOption;
329 static const int i = 9; // ### hardcoded in qcommonstyle.cpp
330 QRect r = option.rect;
331 branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
332 branchOption.palette = option.palette;
333 branchOption.state = QStyle::State_Children;
334
335 if (view->isExpanded(index))
336 branchOption.state |= QStyle::State_Open;
337
338 view->style()->drawPrimitive(QStyle::PE_IndicatorBranch, &branchOption, painter, view);
339
340 // draw text
341 QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
342 QString text = elidedText(option.fontMetrics, textrect.width(), Qt::ElideMiddle,
343 index.data(Qt::DisplayRole).toString());
344 view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
345 option.palette, view->isEnabled(), text);
346 }
347#endif
348}
349
350QScriptDebuggerLocalsWidget::QScriptDebuggerLocalsWidget(QWidget *parent)
351 : QScriptDebuggerLocalsWidgetInterface(*new QScriptDebuggerLocalsWidgetPrivate, parent, 0)
352{
353 Q_D(QScriptDebuggerLocalsWidget);
354 d->view = new QTreeView();
355 d->view->setItemDelegate(new QScriptDebuggerLocalsItemDelegate(this));
356 d->view->setEditTriggers(QAbstractItemView::DoubleClicked);
357// d->view->setEditTriggers(QAbstractItemView::NoEditTriggers);
358 d->view->setEditTriggers(QAbstractItemView::DoubleClicked | QAbstractItemView::SelectedClicked);
359 d->view->setAlternatingRowColors(true);
360 d->view->setSelectionBehavior(QAbstractItemView::SelectRows);
361 d->view->setSortingEnabled(true);
362 d->view->header()->setDefaultAlignment(Qt::AlignLeft);
363// d->view->header()->setSortIndicatorShown(true);
364// d->view->header()->setResizeMode(QHeaderView::ResizeToContents);
365
366 QVBoxLayout *vbox = new QVBoxLayout(this);
367 vbox->setMargin(0);
368 vbox->addWidget(d->view);
369}
370
371QScriptDebuggerLocalsWidget::~QScriptDebuggerLocalsWidget()
372{
373}
374
375/*!
376 \reimp
377*/
378QScriptDebuggerLocalsModel *QScriptDebuggerLocalsWidget::localsModel() const
379{
380 Q_D(const QScriptDebuggerLocalsWidget);
381 if (!d->proxy)
382 return 0;
383 return qobject_cast<QScriptDebuggerLocalsModel*>(d->proxy->sourceModel());
384}
385
386/*!
387 \reimp
388*/
389void QScriptDebuggerLocalsWidget::setLocalsModel(QScriptDebuggerLocalsModel *model)
390{
391 Q_D(QScriptDebuggerLocalsWidget);
392 if (localsModel()) {
393 QObject::disconnect(localsModel(), 0, d->view, 0);
394 }
395 if (model) {
396 QObject::connect(model, SIGNAL(scopeObjectAvailable(QModelIndex)),
397 this, SLOT(_q_expandIndex(QModelIndex)));
398 }
399 if (!d->proxy) {
400 d->proxy = new CustomProxyModel(this);
401 d->view->sortByColumn(0, Qt::AscendingOrder);
402 }
403 d->proxy->setSourceModel(model);
404 d->view->setModel(d->proxy);
405}
406
407/*!
408 \reimp
409*/
410void QScriptDebuggerLocalsWidget::expand(const QModelIndex &index)
411{
412 Q_D(QScriptDebuggerLocalsWidget);
413 d->view->expand(index);
414 d->view->setFirstColumnSpanned(index.row(), QModelIndex(), true);
415}
416
417QT_END_NAMESPACE
418
419#include "qscriptdebuggerlocalswidget.moc"
420
421#include "moc_qscriptdebuggerlocalswidget_p.cpp"
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