make debugger's tooltip handling asynchronous

Needed for remote debugging.

8 files changed, 110 insertions, 56 deletions

diff --git a/src/scripttools/debugging/qscriptdebugger.cpp b/src/scripttools/debugging/qscriptdebugger.cpp
index ce43572..d83a1d0 100644
--- a/src/scripttools/debugging/qscriptdebugger.cpp
+++ b/src/scripttools/debugging/qscriptdebugger.cpp
@@ -94,6 +94,7 @@
 #include <QtGui/qevent.h>
 #include <QtGui/qicon.h>
 #include <QtGui/qinputdialog.h>
+#include <QtGui/qtooltip.h>
 
 QT_BEGIN_NAMESPACE
 typedef QPair<QList<qint64>, QList<qint64> > QScriptScriptsDelta;
@@ -171,8 +172,8 @@ public:
     QScriptCompletionTaskInterface *createCompletionTask(
         const QString &contents, int cursorPosition, int frameIndex, int options);
 
-    QString toolTip(int frameIndex, int lineNumber,
-                    const QStringList &path);
+    void showToolTip(const QPoint &pos, int frameIndex,
+                     int lineNumber, const QStringList &path);
 
     static QPixmap pixmap(const QString &path);
 
@@ -633,11 +634,49 @@ bool QScriptDebuggerPrivate::debuggerEvent(const QScriptDebuggerEvent &event)
     return !interactive;
 }
 
+class QScriptToolTipJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    QScriptToolTipJob(const QPoint &pos, int frameIndex,
+                      int lineNumber, const QStringList &path,
+                      QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler), m_pos(pos),
+          m_frameIndex(frameIndex), m_lineNumber(lineNumber), m_path(path)
+        {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetPropertyExpressionValue(m_frameIndex, m_lineNumber, m_path);
+    }
+    void handleResponse(const QScriptDebuggerResponse &response, int /*commandId*/)
+    {
+        QString tip = response.result().toString();
+        if (tip.indexOf(QLatin1Char('\n')) != -1) {
+            QStringList lines = tip.split(QLatin1Char('\n'));
+            int lineCount = lines.size();
+            if (lineCount > 5) {
+                lines = lines.mid(0, 5);
+                lines.append(QString::fromLatin1("(... %0 more lines ...)").arg(lineCount - 5));
+            }
+            tip = lines.join(QLatin1String("\n"));
+        }
+        QToolTip::showText(m_pos, tip);
+        finish();
+    }
+
+private:
+    QPoint m_pos;
+    int m_frameIndex;
+    int m_lineNumber;
+    QStringList m_path;
+};
+
 /*!
   \reimp
 */
-QString QScriptDebuggerPrivate::toolTip(int frameIndex, int lineNumber,
-                                        const QStringList &path)
+void QScriptDebuggerPrivate::showToolTip(const QPoint &pos, int frameIndex,
+                                         int lineNumber, const QStringList &path)
 {
     if (frameIndex == -1) {
         if (stackWidget)
@@ -645,40 +684,8 @@ QString QScriptDebuggerPrivate::toolTip(int frameIndex, int lineNumber,
         else
             frameIndex = console->currentFrameIndex();
     }
-    // ### cheating for now, need to use async API
-    QScriptEngineDebuggerFrontend *edf = static_cast<QScriptEngineDebuggerFrontend*>(frontend);
-    QScriptDebuggerBackend *backend = edf->backend();
-    QScriptContext *ctx = backend->context(frameIndex);
-    if (!ctx || path.isEmpty())
-        return QString();
-    QScriptContextInfo ctxInfo(ctx);
-    if (ctx->callee().isValid()
-        && ((lineNumber < ctxInfo.functionStartLineNumber())
-            || (lineNumber > ctxInfo.functionEndLineNumber()))) {
-        return QString();
-    }
-    QScriptValueList objects;
-    int pathIndex = 0;
-    if (path.at(0) == QLatin1String("this")) {
-        objects.append(ctx->thisObject());
-        ++pathIndex;
-    } else {
-        objects << ctx->scopeChain();
-    }
-    for (int i = 0; i < objects.size(); ++i) {
-        QScriptValue val = objects.at(i);
-        for (int j = pathIndex; val.isValid() && (j < path.size()); ++j) {
-            val = val.property(path.at(j));
-        }
-        if (val.isValid()) {
-            bool hadException = (ctx->state() == QScriptContext::ExceptionState);
-            QString str = val.toString();
-            if (!hadException && backend->engine()->hasUncaughtException())
-                backend->engine()->clearExceptions();
-            return str;
-        }
-    }
-    return QString();
+    QScriptDebuggerJob *job = new QScriptToolTipJob(pos, frameIndex, lineNumber, path, this);
+    scheduleJob(job);
 }
 
 /*!
@@ -1072,7 +1079,7 @@ class LoadLocalsJob : public QScriptDebuggerCommandSchedulerJob
 public:
     LoadLocalsJob(QScriptDebuggerPrivate *debugger, int frameIndex)
         : QScriptDebuggerCommandSchedulerJob(debugger),
-          m_debugger(debugger), m_frameIndex(frameIndex), m_state(0) {}
+          m_debugger(debugger), m_frameIndex(frameIndex) {}
 
     void start()
     {
@@ -1104,7 +1111,6 @@ public:
 private:
     QScriptDebuggerPrivate *m_debugger;
     int m_frameIndex;
-    int m_state;
 };
 
 class EmitStoppedSignalJob : public QScriptDebuggerJob
diff --git a/src/scripttools/debugging/qscriptdebuggercodewidget.cpp b/src/scripttools/debugging/qscriptdebuggercodewidget.cpp
index 14ce0fe..b2f1dec 100644
--- a/src/scripttools/debugging/qscriptdebuggercodewidget.cpp
+++ b/src/scripttools/debugging/qscriptdebuggercodewidget.cpp
@@ -49,7 +49,6 @@
 #include <QtCore/qdebug.h>
 #include <QtGui/qboxlayout.h>
 #include <QtGui/qstackedwidget.h>
-#include <QtGui/qtooltip.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -197,17 +196,7 @@ void QScriptDebuggerCodeWidgetPrivate::_q_onScriptsChanged()
 void QScriptDebuggerCodeWidgetPrivate::_q_onToolTipRequest(
     const QPoint &pos, int lineNumber, const QStringList &path)
 {
-    QString tip = toolTipProvider->toolTip(/*frameIndex=*/-1, lineNumber, path);
-    if (tip.indexOf(QLatin1Char('\n')) != -1) {
-        QStringList lines = tip.split(QLatin1Char('\n'));
-        int lineCount = lines.size();
-        if (lineCount > 5) {
-            lines = lines.mid(0, 5);
-            lines.append(QString::fromLatin1("(... %0 more lines ...)").arg(lineCount - 5));
-        }
-        tip = lines.join(QLatin1String("\n"));
-    }
-    QToolTip::showText(pos, tip);
+    toolTipProvider->showToolTip(pos, /*frameIndex=*/-1, lineNumber, path);
 }
 
 QScriptDebuggerCodeWidget::QScriptDebuggerCodeWidget(QWidget *parent)
diff --git a/src/scripttools/debugging/qscriptdebuggercommand.cpp b/src/scripttools/debugging/qscriptdebuggercommand.cpp
index c40bfc4..3ceb0d5 100644
--- a/src/scripttools/debugging/qscriptdebuggercommand.cpp
+++ b/src/scripttools/debugging/qscriptdebuggercommand.cpp
@@ -558,6 +558,16 @@ QScriptDebuggerCommand QScriptDebuggerCommand::contextsCheckpoint()
     return cmd;
 }
 
+QScriptDebuggerCommand QScriptDebuggerCommand::getPropertyExpressionValue(
+    int contextIndex, int lineNumber, const QStringList &path)
+{
+    QScriptDebuggerCommand cmd(GetPropertyExpressionValue);
+    cmd.setContextIndex(contextIndex);
+    cmd.setLineNumber(lineNumber);
+    cmd.setAttribute(UserAttribute, path);
+    return cmd;
+}
+
 QScriptDebuggerCommand QScriptDebuggerCommand::newScriptObjectSnapshotCommand()
 {
     QScriptDebuggerCommand cmd(NewScriptObjectSnapshot);
diff --git a/src/scripttools/debugging/qscriptdebuggercommand_p.h b/src/scripttools/debugging/qscriptdebuggercommand_p.h
index 260e3ec..6cfdec5 100644
--- a/src/scripttools/debugging/qscriptdebuggercommand_p.h
+++ b/src/scripttools/debugging/qscriptdebuggercommand_p.h
@@ -106,6 +106,7 @@ public:
         GetActivationObject,
         GetScopeChain,
         ContextsCheckpoint,
+        GetPropertyExpressionValue,
 
         NewScriptObjectSnapshot,
         ScriptObjectSnapshotCapture,
@@ -229,6 +230,8 @@ public:
     static QScriptDebuggerCommand getActivationObjectCommand(int contextIndex);
     static QScriptDebuggerCommand getScopeChainCommand(int contextIndex);
     static QScriptDebuggerCommand contextsCheckpoint();
+    static QScriptDebuggerCommand getPropertyExpressionValue(int contextIndex, int lineNumber,
+                                                             const QStringList &path);
 
     static QScriptDebuggerCommand newScriptObjectSnapshotCommand();
     static QScriptDebuggerCommand scriptObjectSnapshotCaptureCommand(int id, const QScriptDebuggerValue &object);
diff --git a/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp b/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp
index 1be8c5f..ce9aa03 100644
--- a/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp
+++ b/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp
@@ -105,8 +105,8 @@ QScriptDebuggerCommandExecutor::~QScriptDebuggerCommandExecutor()
   Applies the given \a command to the given \a backend.
 */
 QScriptDebuggerResponse QScriptDebuggerCommandExecutor::execute(
-        QScriptDebuggerBackend *backend,
-        const QScriptDebuggerCommand &command)
+    QScriptDebuggerBackend *backend,
+    const QScriptDebuggerCommand &command)
 {
     QScriptDebuggerResponse response;
     switch (command.type()) {
@@ -300,6 +300,43 @@ QScriptDebuggerResponse QScriptDebuggerCommandExecutor::execute(
         response.setResult(qVariantFromValue(backend->contextsCheckpoint()));
     }   break;
 
+    case QScriptDebuggerCommand::GetPropertyExpressionValue: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        int lineNumber = command.lineNumber();
+        QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
+        QStringList path = attr.toStringList();
+        if (!ctx || path.isEmpty())
+            break;
+        QScriptContextInfo ctxInfo(ctx);
+        if (ctx->callee().isValid()
+            && ((lineNumber < ctxInfo.functionStartLineNumber())
+                || (lineNumber > ctxInfo.functionEndLineNumber()))) {
+            break;
+        }
+        QScriptValueList objects;
+        int pathIndex = 0;
+        if (path.at(0) == QLatin1String("this")) {
+            objects.append(ctx->thisObject());
+            ++pathIndex;
+        } else {
+            objects << ctx->scopeChain();
+        }
+        for (int i = 0; i < objects.size(); ++i) {
+            QScriptValue val = objects.at(i);
+            for (int j = pathIndex; val.isValid() && (j < path.size()); ++j) {
+                val = val.property(path.at(j));
+            }
+            if (val.isValid()) {
+                bool hadException = (ctx->state() == QScriptContext::ExceptionState);
+                QString str = val.toString();
+                if (!hadException && backend->engine()->hasUncaughtException())
+                    backend->engine()->clearExceptions();
+                response.setResult(str);
+                break;
+            }
+        }
+    }   break;
+
     case QScriptDebuggerCommand::NewScriptObjectSnapshot: {
         int id = backend->newScriptObjectSnapshot();
         response.setResult(id);
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp
index 1e20ab4..a181711 100644
--- a/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp
@@ -251,6 +251,12 @@ int QScriptDebuggerCommandSchedulerFrontend::scheduleContextsCheckpoint()
     return scheduleCommand(QScriptDebuggerCommand::contextsCheckpoint());
 }
 
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetPropertyExpressionValue(
+    int contextIndex, int lineNumber, const QStringList &path)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getPropertyExpressionValue(contextIndex, lineNumber, path));
+}
+
 int QScriptDebuggerCommandSchedulerFrontend::scheduleEvaluate(int contextIndex,
                                               const QString &program,
                                               const QString &fileName,
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h
index ed9cbf9..ff9c570 100644
--- a/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h
@@ -109,6 +109,8 @@ public:
      int scheduleGetActivationObject(int contextIndex);
      int scheduleGetScopeChain(int contextIndex);
      int scheduleContextsCheckpoint();
+     int scheduleGetPropertyExpressionValue(int contextIndex, int lineNumber,
+                                            const QStringList &path);
 
      // iteration
      int scheduleNewScriptValueIterator(const QScriptDebuggerValue &object);
diff --git a/src/scripttools/debugging/qscripttooltipproviderinterface_p.h b/src/scripttools/debugging/qscripttooltipproviderinterface_p.h
index 0a273d9..463f087 100644
--- a/src/scripttools/debugging/qscripttooltipproviderinterface_p.h
+++ b/src/scripttools/debugging/qscripttooltipproviderinterface_p.h
@@ -57,6 +57,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QPoint;
 class QStringList;
 
 class Q_AUTOTEST_EXPORT QScriptToolTipProviderInterface
@@ -64,8 +65,8 @@ class Q_AUTOTEST_EXPORT QScriptToolTipProviderInterface
 public:
     virtual ~QScriptToolTipProviderInterface() {}
 
-    virtual QString toolTip(int frameIndex, int lineNumber,
-                            const QStringList &path) = 0;
+    virtual void showToolTip(const QPoint &pos, int frameIndex,
+                             int lineNumber, const QStringList &path) = 0;
 };
 
 QT_END_NAMESPACE