/*
 * Dillo Widget
 *
 * Copyright 2005-2007 Sebastian Geerken <sgeerken@dillo.org>
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */



#include "core.hh"
#include "../lout/debug.hh"

#include <stdio.h>

namespace dw {
namespace core {
namespace ui {

using namespace lout;
using namespace lout::object;

int Embed::CLASS_ID = -1;

Embed::Embed(Resource *resource)
{
   DBG_OBJ_CREATE ("dw::core::ui::Embed");
   registerName ("dw::core::ui::Embed", &CLASS_ID);
   this->resource = resource;
   resource->setEmbed (this);
}

Embed::~Embed()
{
   delete resource;
   DBG_OBJ_DELETE ();
}

void Embed::sizeRequestImpl (Requisition *requisition)
{
   resource->sizeRequest (requisition);
}

void Embed::getExtremesImpl (Extremes *extremes)
{
   resource->getExtremes (extremes);
}

void Embed::sizeAllocateImpl (Allocation *allocation)
{
   resource->sizeAllocate (allocation);
}

void Embed::enterNotifyImpl (core::EventCrossing *event)
{
   resource->emitEnter();
   Widget::enterNotifyImpl(event);
}

void Embed::leaveNotifyImpl (core::EventCrossing *event)
{
   resource->emitLeave();
   Widget::leaveNotifyImpl(event);
}

bool Embed::buttonPressImpl (core::EventButton *event)
{
   bool handled;

   if (event->button == 3) {
      resource->emitClicked(event);
      handled = true;
   } else {
      handled = false;
   }
   return handled;
}

void Embed::setWidth (int width)
{
   resource->setWidth (width);
}

void Embed::setAscent (int ascent)
{
   resource->setAscent (ascent);
}

void Embed::setDescent (int descent)
{
   resource->setDescent (descent);
}

void Embed::setDisplayed (bool displayed)
{
   resource->setDisplayed (displayed);
}

void Embed::setEnabled (bool enabled)
{
   resource->setEnabled (enabled);
}

void Embed::draw (View *view, Rectangle *area)
{
   drawWidgetBox (view, area, false);
   resource->draw (view, area);
}

Iterator *Embed::iterator (Content::Type mask, bool atEnd)
{
   return resource->iterator (mask, atEnd);
}

void Embed::setStyle (style::Style *style)
{
   resource->setStyle (style);
   Widget::setStyle (style);
}

// ----------------------------------------------------------------------

bool Resource::ActivateEmitter::emitToReceiver (lout::signal::Receiver
                                                *receiver,
                                                int signalNo,
                                                int argc, Object **argv)
{
   ActivateReceiver *ar = (ActivateReceiver*)receiver;
   Resource *res = (Resource*)((Pointer*)argv[0])->getValue ();

   switch (signalNo) {
   case 0:
      ar->activate (res);
      break;
   case 1:
      ar->enter (res);
      break;
   case 2:
      ar->leave (res);
      break;
   default:
      misc::assertNotReached ();
   }
   return false;
}

void Resource::ActivateEmitter::emitActivate (Resource *resource)
{
   Pointer p (resource);
   Object *argv[1] = { &p };
   emitVoid (0, 1, argv);
}

void Resource::ActivateEmitter::emitEnter (Resource *resource)
{
   Pointer p (resource);
   Object *argv[1] = { &p };
   emitVoid (1, 1, argv);
}

void Resource::ActivateEmitter::emitLeave (Resource *resource)
{
   Pointer p (resource);
   Object *argv[1] = { &p };
   emitVoid (2, 1, argv);
}

// ----------------------------------------------------------------------

Resource::~Resource ()
{
}

void Resource::setEmbed (Embed *embed)
{
   this->embed = embed;
}

void Resource::getExtremes (Extremes *extremes)
{
   /* Simply return the requisition width */
   Requisition requisition;
   sizeRequest (&requisition);
   extremes->minWidth = extremes->maxWidth = requisition.width;
}

void Resource::sizeAllocate (Allocation *allocation)
{
}

void Resource::setWidth (int width)
{
}

void Resource::setAscent (int ascent)
{
}

void Resource::setDescent (int descent)
{
}

void Resource::setDisplayed (bool displayed)
{
}

void Resource::draw (View *view, Rectangle *area)
{
}

void Resource::setStyle (style::Style *style)
{
}

void Resource::emitEnter ()
{
   activateEmitter.emitEnter(this);
}

void Resource::emitLeave ()
{
   activateEmitter.emitLeave(this);
}

bool Resource::ClickedEmitter::emitToReceiver(lout::signal::Receiver *receiver,
                                              int signalNo, int argc,
                                              Object **argv)
{
   ((ClickedReceiver*)receiver)
      ->clicked ((Resource*)((Pointer*)argv[0])->getValue (),
                 (EventButton*)((Pointer*)argv[1])->getValue());
   return false;
}

void Resource::ClickedEmitter::emitClicked (Resource *resource,
                                            EventButton *event)
{
   Pointer p1 (resource);
   Pointer p2 (event);
   Object *argv[2] = { &p1, &p2 };
   emitVoid (0, 2, argv);
}

// ----------------------------------------------------------------------

Iterator *LabelButtonResource::iterator (Content::Type mask, bool atEnd)
{
   /** \todo Perhaps in brackets? */
   // return new TextIterator (getEmbed (), mask, atEnd, getLabel ());
   /** \bug Not implemented. */
   return new EmptyIterator (getEmbed (), mask, atEnd);
}

// ----------------------------------------------------------------------

void ComplexButtonResource::LayoutReceiver::canvasSizeChanged (int width,
                                                               int ascent,
                                                               int descent)
{
   /**
    * \todo Verify that this is correct.
    */
   resource->queueResize (resource->childWidget->extremesChanged ());
}

ComplexButtonResource::ComplexButtonResource ()
{
   layout = NULL;
   layoutReceiver.resource = this;
   click_x = click_y = -1;
}

void ComplexButtonResource::init (Widget *widget)
{
   this->childWidget = widget;

   layout = new Layout (createPlatform ());
   setLayout (layout);
   layout->setWidget (widget);
   layout->connect (&layoutReceiver);
}

void ComplexButtonResource::setEmbed (Embed *embed)
{
   ButtonResource::setEmbed (embed);

   if (childWidget->usesHints ())
      embed->setUsesHints ();
}

ComplexButtonResource::~ComplexButtonResource ()
{
   delete layout;
}

void ComplexButtonResource::sizeRequest (Requisition *requisition)
{
   Requisition widgetRequisition;
   childWidget->sizeRequest (&widgetRequisition);
   requisition->width = widgetRequisition.width + 2 * reliefXThickness ();
   requisition->ascent = widgetRequisition.ascent + reliefYThickness ();
   requisition->descent = widgetRequisition.descent + reliefYThickness ();
}

void ComplexButtonResource::getExtremes (Extremes *extremes)
{
   Extremes widgetExtremes;
   childWidget->getExtremes (&widgetExtremes);
   extremes->minWidth = widgetExtremes.minWidth + 2 * reliefXThickness ();
   extremes->maxWidth = widgetExtremes.maxWidth + 2 * reliefXThickness ();
}

void ComplexButtonResource::sizeAllocate (Allocation *allocation)
{
}

void ComplexButtonResource::setWidth (int width)
{
   childWidget->setWidth (width - 2 * reliefXThickness ());
}

void ComplexButtonResource::setAscent (int ascent)
{
   childWidget->setAscent (ascent - reliefYThickness ());
}

void ComplexButtonResource::setDescent (int descent)
{
   childWidget->setDescent (descent - reliefYThickness ());
}

Iterator *ComplexButtonResource::iterator (Content::Type mask, bool atEnd)
{
   /**
    * \bug Implementation.
    * This is a bit more complicated: We have two layouts here.
    */
   return new EmptyIterator (getEmbed (), mask, atEnd);
}

// ----------------------------------------------------------------------

Iterator *TextResource::iterator (Content::Type mask, bool atEnd)
{
   // return new TextIterator (getEmbed (), mask, atEnd, getText ());
   /** \bug Not implemented. */
   return new EmptyIterator (getEmbed (), mask, atEnd);
}

// ----------------------------------------------------------------------

Iterator *CheckButtonResource::iterator (Content::Type mask, bool atEnd)
{
   //return new TextIterator (getEmbed (), mask, atEnd,
   //                         isActivated () ? "[X]" : "[ ]");
   /** \bug Not implemented. */
   return new EmptyIterator (getEmbed (), mask, atEnd);
}

// ----------------------------------------------------------------------

RadioButtonResource::GroupIterator::~GroupIterator ()
{
}

Iterator *RadioButtonResource::iterator (Content::Type mask, bool atEnd)
{
   //return new TextIterator (getEmbed (), mask, atEnd,
   //                         isActivated () ? "(*)" : "( )");
   /** \bug Not implemented. */
   return new EmptyIterator (getEmbed (), mask, atEnd);
}

} // namespace ui
} // namespace core
} // namespace dw