File indexing completed on 2024-05-12 15:37:54

 /*
  *  This file is part of the KDE libraries
  *  Copyright (C) 2006 Matt Broadstone (mbroadst@gmail.com)
  *            (C) 2007 Maks Orlovich <maksim@kde.org>
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
  *  License along with this library; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #include "localvariabledock.h"
 
 #include <QVBoxLayout>
 #include <QTreeWidget>
 #include <QEventLoop>
 #include <QStringList>
 
 #include <kjs/interpreter.h>
 #include <kjs/PropertyNameArray.h>
 #include <kjs/context.h>
 #include <kjs/scope_chain.h>
 #include <kjs/JSVariableObject.h>
 #include <kjs/object.h>
 #include "khtml_debug.h"
 #include <klocalizedstring.h>
 
 #include "value2string.h"
 
 namespace KJSDebugger
 {
 
 LocalVariablesDock::LocalVariablesDock(QWidget *parent)
     : QDockWidget(i18n("Local Variables"), parent), m_execState(0)
 {
     setFeatures(DockWidgetMovable | DockWidgetFloatable);
     m_view = new QTreeWidget(this);
 
     m_view->setColumnCount(2);
 
     QStringList headers;
     headers << i18n("Reference");
     headers << i18n("Value");
     m_view->setHeaderLabels(headers);
 
     connect(m_view, SIGNAL(itemExpanded(QTreeWidgetItem*)),
             this,   SLOT(slotItemExpanded(QTreeWidgetItem*)));
 
     setWidget(m_view);
 }
 
 LocalVariablesDock::~LocalVariablesDock()
 {
 }
 
 void LocalVariablesDock::updateValue(KJS::ExecState *exec, KJS::JSValue *val,
                                      QTreeWidgetItem *item, bool recurse)
 {
     // Note: parent is responsible for setting our name..
     item->setText(1, valueToString(val));
     if (recurse) {
         if (val->isObject()) {
             updateObjectProperties(exec, val, item);
         } else {
             // It has no kids, so treeview item better not, either
             QList<QTreeWidgetItem *> kids = item->takeChildren();
             qDeleteAll(kids);
         }
     }
 }
 
 void LocalVariablesDock::updateObjectProperties(KJS::ExecState *exec, KJS::JSValue *val,
         QTreeWidgetItem *item, bool globalObject)
 {
     bool root = (item == m_view->invisibleRootItem());
 
     // We have to be careful here -- we don't want to recurse if we're not open;
     // except for root since we may want the + there
     bool recurse = item->isExpanded() || root;
 
     QStringList props;
     KJS::JSObject *obj = 0;
 
     // Get the list of all relevant properties..
     // Note: val may be null for root case..
     if (val) {
         assert(val->isObject());
 
         obj = val->getObject();
         KJS::PropertyNameArray jsProps;
 
         // We use getOwnPropertyNames and not getPropertyNames here
         // to not include things from the prototype
         obj->getOwnPropertyNames(exec, jsProps, KJS::PropertyMap::ExcludeDontEnumProperties);
 
         for (int pos = 0; pos < jsProps.size(); ++pos) {
             // For global (window) objects, we only show hash table properties,
             // for less cluttered display.
             if (globalObject && !obj->getDirect(jsProps[pos])) {
                 continue;
             }
 
             props.append(jsProps[pos].ustring().qstring());
         }
     }
 
     // If we're not an activation, also list the prototype, as __proto__
     if (val && !val->getObject()->isActivation()) {
         props << QLatin1String("__proto__");
     }
 
     // If we're the root, also pretend 'this' is there.
     if (root && exec) {
         props << QLatin1String("this");
     }
 
     // Sort them, to make updates easier.
     props.sort();
 
     // Do we need more or less nodes?
     while (props.size() < item->childCount()) {
         delete item->takeChild(item->childCount() - 1);
     }
 
     while (props.size() > item->childCount()) {
         item->addChild(new QTreeWidgetItem);
     }
 
     // Update names and values.
     for (int pos = 0; pos < props.size(); ++pos) {
         QString propName = props[pos];
         QTreeWidgetItem *kid = item->child(pos);
         kid->setText(0, propName);
 
         if (root && propName == "this") {
             updateValue(exec, exec->thisValue(), kid, true);
         } else {
             updateValue(exec, obj->get(exec, KJS::Identifier(KJS::UString(props[pos]))), kid, recurse);
         }
     }
 }
 
 void LocalVariablesDock::slotItemExpanded(QTreeWidgetItem *item)
 {
     Q_UNUSED(item);
     updateDisplay(m_execState);
 }
 
 void LocalVariablesDock::updateDisplay(KJS::ExecState *exec)
 {
     m_execState = exec;
 
     // Find out out scope object...
     KJS::JSObject *scopeObject = 0;
     KJS::Context  *context = 0;
 
     if (exec) {
         context = exec->context();
     }
 
     // Find the nearest local scope, or
     // failing that the topmost scope
     if (context) {
         KJS::ScopeChain chain = context->scopeChain();
         for (KJS::ScopeChainIterator iter = chain.begin();
                 iter != chain.end(); ++iter) {
             scopeObject = *iter;
             if (scopeObject->isActivation()) {
                 break;
             }
         }
     }
 
     updateObjectProperties(exec, scopeObject, m_view->invisibleRootItem(),
                            scopeObject && !scopeObject->isActivation());
 }
 
 }
 
 #include "moc_localvariabledock.cpp"