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#include <QtCore/qdebug.h>
#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_textEdit(new QTextEdit),
m_lineEdit(0)
{
m_prompt = QLatin1String(">> ");
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->setSpacing(0);
layout->addWidget(m_textEdit);
updateTitle();
if (m_style == Compact) {
m_lineEdit = new QLineEdit;
connect(m_lineEdit, SIGNAL(returnPressed()), SLOT(executeExpression()));
QHBoxLayout *hbox = new QHBoxLayout;
hbox->setMargin(5);
hbox->setSpacing(5);
hbox->addWidget(new QLabel(tr("Expression:")));
hbox->addWidget(m_lineEdit);
layout->addLayout(hbox);
m_textEdit->setReadOnly(true);
m_lineEdit->installEventFilter(this);
} else {
m_textEdit->installEventFilter(this);
}
}
void ExpressionQueryWidget::setEngineDebug(QmlEngineDebug *client)
{
m_client = client;
}
void ExpressionQueryWidget::clear()
{
m_textEdit->clear();
m_lineEdit->clear();
}
void ExpressionQueryWidget::updateTitle()
{
if (m_currObject.debugId() < 0) {
m_title = tr("Expression queries");
} else {
QString desc = QLatin1String("<")
+ m_currObject.className() + QLatin1String(": ")
+ (m_currObject.name().isEmpty() ? QLatin1String("<unnamed>") : m_currObject.name())
+ QLatin1String(">");
m_title = 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_client)
return;
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();
}
}
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);
}
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