/*
  ==============================================================================

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2020 - Raw Material Software Limited

   You may use this code under the terms of the GPL v3
   (see www.gnu.org/licenses).

   For this technical preview, this file is not subject to commercial licensing.

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

#include "../../Application/jucer_Headers.h"
#include "jucer_ComponentDocument.h"


//==============================================================================
ComponentDocument::ComponentDocument (SourceCodeDocument* c)
    : JucerDocument (c)
{
    components.reset (new ComponentLayout());
    components->setDocument (this);

    backgroundGraphics.reset (new PaintRoutine());
    backgroundGraphics->setDocument (this);
}

ComponentDocument::~ComponentDocument()
{
}

//==============================================================================
String ComponentDocument::getTypeName() const
{
    return "Component";
}

JucerDocument* ComponentDocument::createCopy()
{
    auto newOne = new ComponentDocument (cpp);

    newOne->resources = resources;
    newOne->loadFromXml (*createXml());

    return newOne;
}

std::unique_ptr<XmlElement> ComponentDocument::createXml() const
{
    auto doc = JucerDocument::createXml();

    doc->addChildElement (backgroundGraphics->createXml());
    components->addToXml (*doc);

    return doc;
}

bool ComponentDocument::loadFromXml (const XmlElement& xml)
{
    if (JucerDocument::loadFromXml (xml))
    {
        components->clearComponents();

        forEachXmlChildElement (xml, e)
        {
            if (e->hasTagName (PaintRoutine::xmlTagName))
                backgroundGraphics->loadFromXml (*e);
            else
                components->addComponentFromXml (*e, false);
        }

        changed();
        getUndoManager().clearUndoHistory();
        return true;
    }

    return false;
}

void ComponentDocument::applyCustomPaintSnippets (StringArray& snippets)
{
    backgroundGraphics->applyCustomPaintSnippets (snippets);
}

//==============================================================================
class NormalTestComponent   : public Component
{
public:
    NormalTestComponent (ComponentDocument* const doc, const bool fillBackground)
        : document (doc),
          alwaysFillBackground (fillBackground)
    {
        ComponentLayout* const layout = document->getComponentLayout();

        for (int i = 0; i < layout->getNumComponents(); ++i)
            addAndMakeVisible (layout->getComponent (i));
    }

    ~NormalTestComponent() override
    {
        for (int i = getNumChildComponents(); --i >= 0;)
            removeChildComponent (i);
    }

    void paint (Graphics& g) override
    {
        document->getPaintRoutine (0)->fillWithBackground (g, alwaysFillBackground);
        document->getPaintRoutine (0)->drawElements (g, getLocalBounds());
    }

    void resized() override
    {
        if (! getBounds().isEmpty())
        {
            int numTimesToTry = 10;

            while (--numTimesToTry >= 0)
            {
                bool anyCompsMoved = false;

                for (int i = 0; i < getNumChildComponents(); ++i)
                {
                    Component* comp = getChildComponent (i);

                    if (ComponentTypeHandler* const type = ComponentTypeHandler::getHandlerFor (*comp))
                    {
                        const Rectangle<int> newBounds (type->getComponentPosition (comp)
                                                        .getRectangle (getLocalBounds(),
                                                                       document->getComponentLayout()));

                        anyCompsMoved = anyCompsMoved || (comp->getBounds() != newBounds);
                        comp->setBounds (newBounds);
                    }
                }

                // repeat this loop until they've all stopped shuffling (might require a few
                // loops for all the relative positioned comps to settle down)
                if (! anyCompsMoved)
                    break;
            }
        }
    }

private:
    ComponentDocument* const document;
    const bool alwaysFillBackground;
};

Component* ComponentDocument::createTestComponent (const bool alwaysFillBackground)
{
    return new NormalTestComponent (this, alwaysFillBackground);
}

void ComponentDocument::fillInGeneratedCode (GeneratedCode& code) const
{
    JucerDocument::fillInGeneratedCode (code);
}