diff options
Diffstat (limited to 'tools/qmldebugger/expressionquerywidget.cpp')
| -rw-r--r-- | tools/qmldebugger/expressionquerywidget.cpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/tools/qmldebugger/expressionquerywidget.cpp b/tools/qmldebugger/expressionquerywidget.cpp new file mode 100644 index 0000000..b29b465 --- /dev/null +++ b/tools/qmldebugger/expressionquerywidget.cpp @@ -0,0 +1,216 @@ +#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); +} |