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
|
#include <QtGui/qlabel.h>
#include <QtGui/qtextedit.h>
#include <QtGui/qlineedit.h>
#include <QtGui/qpushbutton.h>
#include <QtGui/qevent.h>
#include <QtGui/qgroupbox.h>
#include <QtGui/qtextobject.h>
#include <QtGui/qlayout.h>
#include "expressionquerywidget.h"
ExpressionQueryWidget::ExpressionQueryWidget(QmlEngineDebug *client, QWidget *parent)
: QWidget(parent),
m_style(Compact),
m_client(client),
m_query(0),
m_groupBox(0),
m_textEdit(new QTextEdit),
m_lineEdit(0),
m_button(0)
{
m_prompt = QLatin1String(">> ");
m_groupBox = new QGroupBox;
QVBoxLayout *vbox = new QVBoxLayout(m_groupBox);
vbox->addWidget(m_textEdit);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->addWidget(m_groupBox);
updateTitle();
if (m_style == Compact) {
QHBoxLayout *hbox = new QHBoxLayout;
m_button = new QPushButton(tr("Execute"));
m_button->setEnabled(false);
connect(m_button, SIGNAL(clicked()), SLOT(executeExpression()));
m_lineEdit = new QLineEdit;
connect(m_lineEdit, SIGNAL(returnPressed()), SLOT(executeExpression()));
connect(m_lineEdit, SIGNAL(textChanged(QString)), SLOT(lineEditTextChanged(QString)));
hbox->addWidget(new QLabel(tr("Expression:")));
hbox->addWidget(m_lineEdit);
hbox->addWidget(m_button);
vbox->addLayout(hbox);
m_textEdit->setReadOnly(true);
m_lineEdit->installEventFilter(this);
} else {
m_textEdit->installEventFilter(this);
}
}
void ExpressionQueryWidget::updateTitle()
{
if (m_currObject.debugId() < 0) {
m_groupBox->setTitle(tr("Expression queries"));
} else {
QString desc = QLatin1String("<")
+ m_currObject.className() + QLatin1String(": ")
+ (m_currObject.name().isEmpty() ? QLatin1String("<unnamed>") : m_currObject.name())
+ QLatin1String(">");
m_groupBox->setTitle(tr("Expression queries (using context for %1)"
, "Selected object").arg(desc));
}
}
void ExpressionQueryWidget::appendPrompt()
{
m_textEdit->moveCursor(QTextCursor::End);
if (m_style == Compact) {
m_textEdit->insertPlainText("\n");
} else {
m_textEdit->setTextColor(Qt::gray);
m_textEdit->append(m_prompt);
}
}
void ExpressionQueryWidget::setCurrentObject(const QmlDebugObjectReference &obj)
{
m_currObject = obj;
updateTitle();
}
void ExpressionQueryWidget::checkCurrentContext()
{
m_textEdit->moveCursor(QTextCursor::End);
if (m_currObject.debugId() != -1 && m_currObject.debugId() != m_objectAtLastFocus.debugId())
showCurrentContext();
m_objectAtLastFocus = m_currObject;
}
void ExpressionQueryWidget::showCurrentContext()
{
m_textEdit->moveCursor(QTextCursor::End);
m_textEdit->setTextColor(Qt::darkGreen);
m_textEdit->append(m_currObject.className()
+ QLatin1String(": ")
+ (m_currObject.name().isEmpty() ? QLatin1String("<unnamed>") : m_currObject.name()));
appendPrompt();
}
void ExpressionQueryWidget::executeExpression()
{
if (m_style == Compact)
m_expr = m_lineEdit->text().trimmed();
else
m_expr = m_expr.trimmed();
if (!m_expr.isEmpty() && m_currObject.debugId() != -1) {
if (m_query)
delete m_query;
m_query = m_client->queryExpressionResult(m_currObject.debugId(), m_expr, this);
if (!m_query->isWaiting())
showResult();
else
QObject::connect(m_query, SIGNAL(stateChanged(State)),
this, SLOT(showResult()));
m_lastExpr = m_expr;
if (m_lineEdit)
m_lineEdit->clear();
}
}
void ExpressionQueryWidget::showResult()
{
if (m_query) {
m_textEdit->moveCursor(QTextCursor::End);
QString result;
if (m_query->result().isNull())
result = QLatin1String("<no value>");
else
result = m_query->result().toString();
if (m_style == Compact) {
m_textEdit->setTextColor(Qt::black);
m_textEdit->setFontWeight(QFont::Bold);
m_textEdit->insertPlainText(m_expr + " : ");
m_textEdit->setFontWeight(QFont::Normal);
m_textEdit->insertPlainText(result);
} else {
m_textEdit->append(result);
}
appendPrompt();
m_expr.clear();
}
}
void ExpressionQueryWidget::lineEditTextChanged(const QString &s)
{
if (m_button)
m_button->setEnabled(!s.isEmpty());
}
bool ExpressionQueryWidget::eventFilter(QObject *obj, QEvent *event)
{
if (obj == m_textEdit) {
switch (event->type()) {
case QEvent::KeyPress:
{
QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
int key = keyEvent->key();
if (key == Qt::Key_Return || key == Qt::Key_Enter) {
executeExpression();
return true;
} else if (key == Qt::Key_Backspace) {
// ensure m_expr doesn't contain backspace characters
QTextCursor cursor = m_textEdit->textCursor();
bool atLastLine = !(cursor.block().next().isValid());
if (!atLastLine)
return true;
if (cursor.columnNumber() <= m_prompt.count())
return true;
cursor.deletePreviousChar();
m_expr = cursor.block().text().mid(m_prompt.count());
return true;
} else {
m_textEdit->moveCursor(QTextCursor::End);
m_textEdit->setTextColor(Qt::black);
m_expr += keyEvent->text();
}
break;
}
case QEvent::FocusIn:
checkCurrentContext();
m_textEdit->moveCursor(QTextCursor::End);
break;
default:
break;
}
} else if (obj == m_lineEdit) {
switch (event->type()) {
case QEvent::KeyPress:
{
QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
int key = keyEvent->key();
if (key == Qt::Key_Up && m_lineEdit->text() != m_lastExpr) {
m_expr = m_lineEdit->text();
if (!m_lastExpr.isEmpty())
m_lineEdit->setText(m_lastExpr);
} else if (key == Qt::Key_Down) {
m_lineEdit->setText(m_expr);
}
break;
}
case QEvent::FocusIn:
checkCurrentContext();
break;
default:
break;
}
}
return QWidget::eventFilter(obj, event);
}
|
