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#include "scriptengine.h"
#include "filechooser.h"
#include "smallUsefulFunctions.h"
#include "qdocumentsearch.h"
#include "scriptobject.h"
#include "buildmanager.h"
#include "texmaker.h"
Q_DECLARE_METATYPE(QDocument*);
BuildManager* scriptengine::buildManager = 0;
Texmaker* scriptengine::app = 0;
//copied from trolltech mailing list
template <typename Tp> QScriptValue qScriptValueFromQObject(QScriptEngine *engine, Tp const &qobject)
{
return engine->newQObject(qobject);
}
template <typename Tp> void qScriptValueToQObject(const QScriptValue &value, Tp &qobject) {
qobject = qobject_cast<Tp>(value.toQObject());
}
template <typename Tp> int qScriptRegisterQObjectMetaType( QScriptEngine *engine, const QScriptValue &prototype = QScriptValue(), Tp * /* dummy */ = 0)
{
return qScriptRegisterMetaType<Tp>(engine, qScriptValueFromQObject, qScriptValueToQObject, prototype);
}
//
QScriptValue qScriptValueFromDocumentCursor(QScriptEngine *engine, QDocumentCursor const &cursor)
{
return engine->newQObject(new QDocumentCursor(cursor), QScriptEngine::ScriptOwnership);
}
void qScriptValueToDocumentCursor(const QScriptValue &value, QDocumentCursor &qobject) {
Q_ASSERT(value.toQObject());
qobject = *qobject_cast<QDocumentCursor*>(value.toQObject());
}
Q_DECLARE_METATYPE(ProcessX*);
Q_DECLARE_METATYPE(SubScriptObject*);
scriptengine::scriptengine(QObject *parent) : QObject(parent),m_editor(0)
{
engine=new QScriptEngine(this);
qScriptRegisterQObjectMetaType<QDocument*>(engine);
qScriptRegisterMetaType<QDocumentCursor>(engine, qScriptValueFromDocumentCursor, qScriptValueToDocumentCursor, QScriptValue());
qScriptRegisterQObjectMetaType<ProcessX*>(engine);
qScriptRegisterQObjectMetaType<SubScriptObject*>(engine);
qScriptRegisterQObjectMetaType<Texmaker*>(engine);
// engine->setDefaultPrototype(qMetaTypeId<QDocument*>(), QScriptValue());
//engine->setDefaultPrototype(qMetaTypeId<QDocumentCursor>(), QScriptValue());
}
scriptengine::~scriptengine(){
delete engine;
}
void scriptengine::setScript(const QString& script){
m_script=script;
}
void scriptengine::setEditor(QEditor *editor){
m_editor = editor;
}
#define SCRIPT_REQUIRE(cond, message) if (!(cond)) { context->throwError(scriptengine::tr(message)); return engine->undefinedValue(); }
QDocumentCursor cursorFromValue(const QScriptValue& value){
QDocumentCursor * c = qobject_cast<QDocumentCursor*> (value.toQObject());
if (!c) {
if (value.engine() && value.engine()->currentContext()) value.engine()->currentContext()->throwError(scriptengine::tr("Expected cursor object"));
return QDocumentCursor();
}
return *c;
}
QScriptValue searchReplaceFunction(QScriptContext *context, QScriptEngine *engine, bool replace){
QEditor *editor = qobject_cast<QEditor*>(context->thisObject().toQObject());
//read arguments
SCRIPT_REQUIRE(editor, "invalid object");
SCRIPT_REQUIRE(!replace || context->argumentCount()>=2, "at least two arguments are required");
SCRIPT_REQUIRE(context->argumentCount()>=1, "at least one argument is required");
SCRIPT_REQUIRE(context->argumentCount()<=4, "too many arguments");
SCRIPT_REQUIRE(context->argument(0).isString()||context->argument(0).isRegExp(), "first argument must be a string or regexp");
QDocumentSearch::Options flags = QDocumentSearch::Silent;
bool global = false, caseInsensitive = false;
QString searchFor;
if (context->argument(0).isRegExp()) {
flags |= QDocumentSearch::RegExp;
QRegExp r = context->argument(0).toRegExp();
searchFor = r.pattern();
caseInsensitive = r.caseSensitivity() == Qt::CaseInsensitive;
Q_ASSERT(caseInsensitive == context->argument(0).property("ignoreCase").toBool()); //check assumption about javascript core
global = context->argument(0).property("global").toBool();
} else searchFor = context->argument(0).toString();
QScriptValue handler;
QDocumentCursor scope = editor->document()->cursor(0,0,editor->document()->lineCount(),0);
int handlerCount = 0;
for (int i=1; i<context->argumentCount();i++)
if (context->argument(i).isString() || context->argument(i).isFunction()) handlerCount++;
SCRIPT_REQUIRE(handlerCount <= (replace?2:1), "too many string or function arguments");
for (int i=1; i<context->argumentCount();i++) {
QScriptValue a = context->argument(i);
if (a.isFunction()) {
SCRIPT_REQUIRE(!handler.isValid(), "Multiple callbacks");
handler = a;
} else if (a.isString()) {
if (!replace || handlerCount > 1) {
QString s = a.toString().toLower();
global = s.contains("g");
caseInsensitive = s.contains("i");
if (s.contains("w")) flags |= QDocumentSearch::WholeWords;
} else {
SCRIPT_REQUIRE(!handler.isValid(), "Multiple callbacks");
handler = a;
}
handlerCount--;
} else if (a.isNumber()) flags |= QDocumentSearch::Options((int)a.toNumber());
else if (a.isObject()) scope = cursorFromValue(a);
else SCRIPT_REQUIRE(false, "Invalid argument");
}
SCRIPT_REQUIRE(handler.isValid() || !replace, "No callback given");
if (!caseInsensitive) flags |= QDocumentSearch::CaseSensitive;
//search/replace
QDocumentSearch search(editor, searchFor, flags);
search.setScope(scope);
if (replace && handler.isString()) {
search.setReplaceText(handler.toString());
search.setOption(QDocumentSearch::Replace,true);
return search.next(false, global, false, false);
}
if (!handler.isValid())
return search.next(false,global,true,false);
int count=0;
while (search.next(false, false, true, false) && search.cursor().isValid()) {
count++;
QDocumentCursor temp = search.cursor();
QScriptValue cb = handler.call(QScriptValue(), QScriptValueList() << engine->newQObject(&temp));
if (replace && cb.isValid()){
QDocumentCursor tmp = search.cursor();
tmp.replaceSelectedText(cb.toString());
search.setCursor(tmp.selectionEnd());
}
if (!global) break;
}
return count;
}
QScriptValue searchFunction(QScriptContext *context, QScriptEngine *engine){
return searchReplaceFunction(context, engine, false);
}
QScriptValue replaceFunction(QScriptContext *context, QScriptEngine *engine){
return searchReplaceFunction(context, engine, true);
}
void scriptengine::run(){
if(m_editor){
ScriptObject globalObject(m_script,buildManager,app);
QScriptValue globalValue = engine->newQObject(&globalObject);
globalValue.setPrototype(engine->globalObject());
engine->setGlobalObject(globalValue);
QScriptValue editorValue = engine->newQObject(m_editor);
editorValue.setProperty("search", engine->newFunction(&searchFunction), QScriptValue::ReadOnly|QScriptValue::Undeletable);
editorValue.setProperty("replace", engine->newFunction(&replaceFunction), QScriptValue::ReadOnly|QScriptValue::Undeletable);
engine->globalObject().setProperty("editor", editorValue);
QDocumentCursor c=m_editor->cursor();
c.setAutoUpdated(true); //auto updated so the editor text insert functions actually move the cursor
QScriptValue cursorValue = engine->newQObject(&c);
engine->globalObject().setProperty("cursor", cursorValue);
QScriptValue qsMetaObject = engine->newQMetaObject(c.metaObject());
engine->globalObject().setProperty("cursorEnums", qsMetaObject);
FileChooser flchooser(0,scriptengine::tr("File Chooser"));
engine->globalObject().setProperty("fileChooser", engine->newQObject(&flchooser));
engine->evaluate(m_script);
if(engine->hasUncaughtException()){
QString error = QString(tr("Uncaught exception at line %1: %2\n")).arg(engine->uncaughtExceptionLineNumber()).arg(engine->uncaughtException().toString());
error += "\n"+QString(tr("Backtrace %1")).arg(engine->uncaughtExceptionBacktrace().join(", "));
qDebug() << error;
QMessageBox::critical(0, tr("Script-Error"), error);
}
if (!m_editor) return;
if (engine->globalObject().property("cursor").strictlyEquals(cursorValue)) m_editor->setCursor(c);
else m_editor->setCursor(cursorFromValue(engine->globalObject().property("cursor")));
}
}
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