<filename>src/rendering/dashboard.cpp
/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2019                                                               *
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#include <openspace/rendering/dashboard.h>

#include <openspace/rendering/dashboarditem.h>
#include <openspace/scripting/scriptengine.h>
#include <ghoul/misc/assert.h>

#include "dashboard_lua.inl"

namespace {
    constexpr openspace::properties::Property::PropertyInfo EnabledInfo = {
        "IsEnabled",
        "Enabled",
        "If this value is 'false', this dashboard will be invisible, regardless of the "
        "state of the individual components"
    };
    constexpr openspace::properties::Property::PropertyInfo StartPositionOffsetInfo = {
        "StartPositionOffset",
        "Start Position Offset",
        "A 2D vector controlling where the dashboard rendering starts."
        "Adding an offset in x and y-direction on screen"
    };
} // namespace

namespace openspace {

Dashboard::Dashboard()
    : properties::PropertyOwner({ "Dashboard" })
    , _isEnabled(EnabledInfo, true)
    , _startPositionOffset(
        properties::IVec2Property(StartPositionOffsetInfo, glm::ivec2(10, -10))
    )
{
    addProperty(_isEnabled);
    addProperty(_startPositionOffset);
}

void Dashboard::addDashboardItem(std::unique_ptr<DashboardItem> item) {
    const std::string& originalIdentifier = item->identifier();
    int suffix = 1;
    while (true) {
        auto it = std::find_if(
            _items.begin(),
            _items.end(),
            [&item](const std::unique_ptr<DashboardItem>& i) {
                return (i->identifier() == item->identifier());
            }
        );

        if (it == _items.end()) {
            // We found a unique name
            break;
        }
        else {
            item->setIdentifier(originalIdentifier + std::to_string(suffix));
            item->setGuiName(originalIdentifier + " " + std::to_string(suffix));
            ++suffix;
        }
    }

    addPropertySubOwner(item.get());
    _items.push_back(std::move(item));
}

void Dashboard::removeDashboardItem(int index) {
    ghoul_assert(index < static_cast<int>(_items.size()), "Invalid index");

    removePropertySubOwner(_items[index].get());
    _items.erase(_items.begin() + index);
}

void Dashboard::removeDashboardItem(const std::string& identifier) {
    const auto it = std::find_if(
        _items.begin(),
        _items.end(),
        [&identifier](const std::unique_ptr<DashboardItem>& i) {
            return i->identifier() == identifier;
        }
    );

    if (it == _items.end()) {
        return;
    }

    removePropertySubOwner(it->get());
    _items.erase(it);
}

bool Dashboard::hasItem(int index) const {
    return (index >= 0) && (index < static_cast<int>(_items.size()));
}

const DashboardItem& Dashboard::item(int index) const {
    ghoul_assert(index < static_cast<int>(_items.size()), "Invalid index");

    return *_items[index];
}

void Dashboard::clearDashboardItems() {
    for (const std::unique_ptr<DashboardItem>& item : _items) {
        removePropertySubOwner(item.get());
    }
    _items.clear();
}

void Dashboard::render(glm::vec2& penPosition) {
    if (!_isEnabled) {
        return;
    }

    for (const std::unique_ptr<DashboardItem>& item : _items) {
        if (item->isEnabled()) {
            item->render(penPosition);
        }
    }
}

glm::vec2 Dashboard::getStartPositionOffset() {
    return _startPositionOffset.value();
};

scripting::LuaLibrary Dashboard::luaLibrary() {
    return {
        "dashboard",
        {
            {
                "addDashboardItem",
                &luascriptfunctions::addDashboardItem,
                {},
                "table",
                "Adds a new dashboard item to the main dashboard."
            },
            {
                "removeDashboardItem",
                &luascriptfunctions::removeDashboardItem,
                {},
                "string",
                "Removes the dashboard item with the specified identifier."
            },
            {
                "clearDashboardItems",
                &luascriptfunctions::clearDashboardItems,
                {},
                "",
                "Removes all dashboard items from the main dashboard."
            }
        }
    };
}

} // namespace openspace
