/***************************************************************************
 *   Copyright (C) 2018 by Intevation GmbH <intevation@intevation.de>      *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "kjs_event_p.h"

#include <kjs/kjsarguments.h>
#include <kjs/kjsinterpreter.h>
#include <kjs/kjsobject.h>
#include <kjs/kjsprototype.h>

#include "event_p.h"
#include "kjs_field_p.h"

using namespace Okular;

static KJSPrototype *g_eventProto;

// Event.name
static KJSObject eventGetName(KJSContext *, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    return KJSString(event->name());
}

// Event.type
static KJSObject eventGetType(KJSContext *, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    return KJSString(event->type());
}

// Event.targetName (getter)
static KJSObject eventGetTargetName(KJSContext *, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    return KJSString(event->targetName());
}

// Event.targetName (setter)
static void eventSetTargetName(KJSContext *ctx, void *object, KJSObject value)
{
    Event *event = reinterpret_cast<Event *>(object);
    event->setTargetName(value.toString(ctx));
}

// Event.shift
static KJSObject eventGetShift(KJSContext *, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    return KJSBoolean(event->shiftModifier());
}

// Event.source
static KJSObject eventGetSource(KJSContext *ctx, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    if (event->eventType() == Event::FieldCalculate) {
        FormField *src = event->source();
        if (src)
            return JSField::wrapField(ctx, src, event->sourcePage());
    }
    return KJSUndefined();
}

// Event.target
static KJSObject eventGetTarget(KJSContext *ctx, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    switch (event->eventType()) {
    case Event::FieldCalculate:
    case Event::FieldFormat:
    case Event::FieldKeystroke:
    case Event::FieldFocus:
    case Event::FieldValidate: {
        FormField *target = static_cast<FormField *>(event->target());
        if (target)
            return JSField::wrapField(ctx, target, event->targetPage());
        break;
    }
    default: {
    }
    }
    return KJSUndefined();
}

// Event.value (getter)
static KJSObject eventGetValue(KJSContext *, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    return KJSString(event->value().toString());
}

// Event.value (setter)
static void eventSetValue(KJSContext *ctx, void *object, KJSObject value)
{
    Event *event = reinterpret_cast<Event *>(object);
    event->setValue(QVariant(value.toString(ctx)));
}

// Event.rc (getter)
static KJSObject eventGetReturnCode(KJSContext *, void *object)
{
    const Event *event = reinterpret_cast<Event *>(object);
    return KJSBoolean(event->returnCode());
}

// Event.rc (setter)
static void eventSetReturnCode(KJSContext *ctx, void *object, KJSObject value)
{
    Event *event = reinterpret_cast<Event *>(object);
    event->setReturnCode(value.toBoolean(ctx));
}

// Event.willCommit (getter)
static KJSObject eventGetWillCommit(KJSContext *, void * /*object*/)
{
    // TODO Someone try to understand the defintion of willCommit better from js_api_reference.pdf
    return KJSBoolean(true);
}

void JSEvent::initType(KJSContext *ctx)
{
    static bool initialized = false;
    if (initialized)
        return;
    initialized = true;

    if (!g_eventProto)
        g_eventProto = new KJSPrototype();

    g_eventProto->defineProperty(ctx, QStringLiteral("name"), eventGetName);
    g_eventProto->defineProperty(ctx, QStringLiteral("type"), eventGetType);
    g_eventProto->defineProperty(ctx, QStringLiteral("targetName"), eventGetTargetName, eventSetTargetName);
    g_eventProto->defineProperty(ctx, QStringLiteral("shift"), eventGetShift);
    g_eventProto->defineProperty(ctx, QStringLiteral("source"), eventGetSource);
    g_eventProto->defineProperty(ctx, QStringLiteral("target"), eventGetTarget);
    g_eventProto->defineProperty(ctx, QStringLiteral("willCommit"), eventGetWillCommit);
    g_eventProto->defineProperty(ctx, QStringLiteral("value"), eventGetValue, eventSetValue);
    g_eventProto->defineProperty(ctx, QStringLiteral("rc"), eventGetReturnCode, eventSetReturnCode);
}

KJSObject JSEvent::wrapEvent(KJSContext *ctx, Event *event)
{
    return g_eventProto->constructObject(ctx, event);
}