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path: root/src/gui/npcdialog.cpp
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/*
 *  The Mana Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2012  The Mana Developers
 *
 *  This file is part of The Mana Client.
 *
 *  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
 *  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 "gui/npcdialog.h"

#include "client.h"
#include "configuration.h"
#include "event.h"
#include "eventlistener.h"
#include "playerinfo.h"

#include "gui/npcpostdialog.h"
#include "gui/setup.h"

#include "gui/widgets/button.h"
#include "gui/widgets/inttextfield.h"
#include "gui/widgets/layout.h"
#include "gui/widgets/listbox.h"
#include "gui/widgets/scrollarea.h"
#include "gui/widgets/textbox.h"
#include "gui/widgets/textfield.h"

#include "net/net.h"
#include "net/npchandler.h"

#include "utils/gettext.h"
#include "utils/stringutils.h"

#include <guichan/font.hpp>

#define CAPTION_WAITING _("Waiting for server")
#define CAPTION_NEXT _("Next")
#define CAPTION_CLOSE _("Close")
#define CAPTION_SUBMIT _("Submit")

typedef std::map<int, NpcDialog*> NpcDialogs;

class NpcEventListener : public EventListener
{
public:
    void event(Event::Channel channel, const Event &event);

    NpcDialog *getDialog(int id, bool make = true);

    void removeDialog(int id);

private:
    NpcDialogs mNpcDialogs;
};

static NpcEventListener *npcListener = NULL;

NpcDialog::DialogList NpcDialog::instances;

NpcDialog::NpcDialog(int npcId)
    : Window(_("NPC")),
      mNpcId(npcId),
      mLogInteraction(config.getBoolValue("logNpcInGui")),
      mDefaultInt(0),
      mInputState(NPC_INPUT_NONE),
      mActionState(NPC_ACTION_WAIT)
{
    // Basic Window Setup
    setWindowName("NpcText");
    setResizable(true);
    setCloseButton(false);
    setFocusable(true);

    setMinWidth(200);
    setMinHeight(150);

    setDefaultSize(260, 200, ImageRect::CENTER);

    // Setup output text box
    mTextBox = new TextBox;
    mTextBox->setEditable(false);
    mTextBox->setOpaque(false);

    mScrollArea = new ScrollArea(mTextBox);
    mScrollArea->setHorizontalScrollPolicy(gcn::ScrollArea::SHOW_NEVER);
    mScrollArea->setVerticalScrollPolicy(gcn::ScrollArea::SHOW_ALWAYS);

    // Setup listbox
    mItemList = new ListBox(this);
    mItemList->setWrappingEnabled(true);
    setContentSize(260, 175);

    mListScrollArea = new ScrollArea(mItemList);
    mListScrollArea->setHorizontalScrollPolicy(gcn::ScrollArea::SHOW_NEVER);

    mItemList->setVisible(true);

    // Setup string input box
    mTextField = new TextField("");
    mTextField->setVisible(true);

    // Setup int input box
    mIntField = new IntTextField;
    mIntField->setVisible(true);

    mClearButton = new Button(_("Clear log"), "clear", this);

    // Setup button
    mNextButton = new Button("", "ok", this);

    //Setup more and less buttons (int input)
    mPlusButton = new Button(_("+"), "inc", this);
    mMinusButton = new Button(_("-"), "dec", this);

    int width = std::max(mNextButton->getFont()->getWidth(CAPTION_WAITING),
                         mNextButton->getFont()->getWidth(CAPTION_NEXT));
    width = std::max(width, mNextButton->getFont()->getWidth(CAPTION_CLOSE));
    width = std::max(width, mNextButton->getFont()->getWidth(CAPTION_SUBMIT));

    mNextButton->setWidth(8 + width);

    mResetButton = new Button(_("Reset"), "reset", this);

    // Place widgets
    buildLayout();

    center();
    loadWindowState();

    instances.push_back(this);
    setVisible(true);
    requestFocus();

    listen(Event::ConfigChannel);
    PlayerInfo::setNPCInteractionCount(PlayerInfo::getNPCInteractionCount()
                                       + 1);
}

NpcDialog::~NpcDialog()
{
    // These might not actually be in the layout, so lets be safe
    delete mScrollArea;
    delete mItemList;
    delete mTextField;
    delete mIntField;
    delete mResetButton;
    delete mPlusButton;
    delete mMinusButton;
    delete mNextButton;

    instances.remove(this);

    PlayerInfo::setNPCInteractionCount(PlayerInfo::getNPCInteractionCount()
                                       - 1);

    npcListener->removeDialog(mNpcId);
}

void NpcDialog::setText(const std::string &text)
{
    mText = text;
    mTextBox->setTextWrapped(mText, mScrollArea->getWidth() - 15);
}

void NpcDialog::addText(const std::string &text, bool save)
{
    if (save || mLogInteraction)
    {
        mNewText += text + "\n";
        setText(mText + text + "\n");
    }
    mScrollArea->setVerticalScrollAmount(mScrollArea->getVerticalMaxScroll());
    mActionState = NPC_ACTION_WAIT;
    buildLayout();
}

void NpcDialog::showNextButton()
{
    mActionState = NPC_ACTION_NEXT;
    buildLayout();
}

void NpcDialog::showCloseButton()
{
    mActionState = NPC_ACTION_CLOSE;
    buildLayout();
}

void NpcDialog::action(const gcn::ActionEvent &event)
{
    if (event.getId() == "ok")
    {
        if (mActionState == NPC_ACTION_NEXT)
        {
            nextDialog();
            addText(std::string(), false);
        }
        else if (mActionState == NPC_ACTION_CLOSE)
        {
            close();
        }
        else if (mActionState == NPC_ACTION_INPUT)
        {
            std::string printText = "";  // Text that will get printed in the textbox

            if (mInputState == NPC_INPUT_LIST)
            {
                int selectedIndex = mItemList->getSelected();

                if (selectedIndex >= (int) mItems.size() || selectedIndex < 0)
                    return;

                printText = mItems[selectedIndex];

                Net::getNpcHandler()->menuSelect(mNpcId, selectedIndex + 1);
            }
            else if (mInputState == NPC_INPUT_STRING)
            {
                printText = mTextField->getText();

                Net::getNpcHandler()->stringInput(mNpcId, printText);
            }
            else if (mInputState == NPC_INPUT_INTEGER)
            {
                printText = strprintf("%d", mIntField->getValue());

                Net::getNpcHandler()->integerInput(mNpcId, mIntField->getValue());
            }
            // addText will auto remove the input layout
            addText(strprintf("\n> \"%s\"\n", printText.c_str()), false);

            mNewText.clear();
        }

        if (!mLogInteraction)
            setText("");
    }
    else if (event.getId() == "reset")
    {
        if (mInputState == NPC_INPUT_STRING)
        {
            mTextField->setText(mDefaultString);
        }
        else if (mInputState == NPC_INPUT_INTEGER)
        {
            mIntField->setValue(mDefaultInt);
        }
    }
    else if (event.getId() == "inc")
    {
        mIntField->setValue(mIntField->getValue() + 1);
    }
    else if (event.getId() == "dec")
    {
        mIntField->setValue(mIntField->getValue() - 1);
    }
    else if (event.getId() == "clear")
    {
        setText(mNewText);
    }
}

void NpcDialog::nextDialog()
{
    Net::getNpcHandler()->nextDialog(mNpcId);
}

void NpcDialog::close()
{
    Net::getNpcHandler()->closeDialog(mNpcId);
    Window::close();
}

int NpcDialog::getNumberOfElements()
{
    return mItems.size();
}

std::string NpcDialog::getElementAt(int i)
{
    return mItems[i];
}

void NpcDialog::choiceRequest()
{
    mItems.clear();
    mActionState = NPC_ACTION_INPUT;
    mInputState = NPC_INPUT_LIST;
    buildLayout();
}

void NpcDialog::addChoice(const std::string &choice)
{
    mItems.push_back(choice);
}

void NpcDialog::initChoiceSelection()
{
    mItemList->setSelected(0);
}

void NpcDialog::textRequest(const std::string &defaultText)
{
    mActionState = NPC_ACTION_INPUT;
    mInputState = NPC_INPUT_STRING;
    mDefaultString = defaultText;
    mTextField->setText(defaultText);
    buildLayout();
}

bool NpcDialog::isTextInputFocused() const
{
    return mTextField->isFocused();
}

bool NpcDialog::isInputFocused() const
{
    return mTextField->isFocused() || mIntField->isFocused();
}

bool NpcDialog::isAnyInputFocused()
{
    DialogList::iterator it = instances.begin();
    DialogList::iterator it_end = instances.end();

    for (; it != it_end; it++)
    {
        if ((*it)->isInputFocused())
        {
            return true;
        }
    }

    return false;
}

void NpcDialog::integerRequest(int defaultValue, int min, int max)
{
    mActionState = NPC_ACTION_INPUT;
    mInputState = NPC_INPUT_INTEGER;
    mDefaultInt = defaultValue;
    mIntField->setRange(min, max);
    mIntField->setValue(defaultValue);
    buildLayout();
}

void NpcDialog::move(int amount)
{
    if (mActionState != NPC_ACTION_INPUT)
        return;

    switch (mInputState)
    {
        case NPC_INPUT_INTEGER:
            mIntField->setValue(mIntField->getValue() + amount);
            break;
        case NPC_INPUT_LIST:
            mItemList->setSelected(mItemList->getSelected() - amount);
            break;
        case NPC_INPUT_NONE:
        case NPC_INPUT_STRING:
            break;
    }
}

void NpcDialog::widgetResized(const gcn::Event &event)
{
    Window::widgetResized(event);

    setText(mText);
}

void NpcDialog::setVisible(bool visible)
{
    Window::setVisible(visible);

    if (!visible)
    {
        scheduleDelete();
    }
}

void NpcDialog::event(Event::Channel channel, const Event &event)
{
    if (channel != Event::ConfigChannel)
        return;

    if (event.getType() == Event::ConfigOptionChanged &&
        event.getString("option") == "logNpcInGui")
    {
        mLogInteraction = config.getBoolValue("logNpcInGui");
    }
}

void NpcDialog::mouseClicked(gcn::MouseEvent &mouseEvent)
{
    if (mouseEvent.getSource() == mItemList &&
        isDoubleClick(mItemList->getSelected()))
    {
        action(gcn::ActionEvent(mNextButton, mNextButton->getActionEventId()));
    }
    if (mouseEvent.getSource() == mTextBox && isDoubleClick((int)(long)mTextBox))
    {
        if (mActionState == NPC_ACTION_NEXT || mActionState == NPC_ACTION_CLOSE)
            action(gcn::ActionEvent(mNextButton,
                                    mNextButton->getActionEventId()));
    }
}

NpcDialog *NpcDialog::getActive()
{
    if (instances.size() == 1)
        return instances.front();

    DialogList::iterator it = instances.begin();
    DialogList::iterator it_end = instances.end();

    for (; it != it_end; it++)
    {
        if ((*it)->isFocused())
        {
            return (*it);
        }
    }

    return 0;
}

void NpcDialog::closeAll()
{
    DialogList::iterator it = instances.begin();
    DialogList::iterator it_end = instances.end();

    for (; it != it_end; it++)
    {
        (*it)->close();
    }
}

void NpcDialog::setup()
{
    if (npcListener)
        return;

    npcListener = new NpcEventListener();

    npcListener->listen(Event::NpcChannel);
}

void NpcDialog::buildLayout()
{
    clearLayout();

    if (mActionState != NPC_ACTION_INPUT)
    {
        if (mActionState == NPC_ACTION_WAIT)
        {
            mNextButton->setCaption(CAPTION_WAITING);
        }
        else if (mActionState == NPC_ACTION_NEXT)
        {
            mNextButton->setCaption(CAPTION_NEXT);
        }
        else if (mActionState == NPC_ACTION_CLOSE)
        {
            mNextButton->setCaption(CAPTION_CLOSE);
        }
        place(0, 0, mScrollArea, 5, 3);
        place(3, 3, mClearButton);
        place(4, 3, mNextButton);
    }
    else if (mInputState != NPC_INPUT_NONE)
    {
        if (!mLogInteraction)
            setText(mNewText);

        mNextButton->setCaption(CAPTION_SUBMIT);
        if (mInputState == NPC_INPUT_LIST)
        {
            place(0, 0, mScrollArea, 6, 3);
            place(0, 3, mListScrollArea, 6, 3);
            place(2, 6, mClearButton, 2);
            place(4, 6, mNextButton, 2);

            mItemList->setSelected(-1);
        }
        else if (mInputState == NPC_INPUT_STRING)
        {
            place(0, 0, mScrollArea, 6, 3);
            place(0, 3, mTextField, 6);
            place(0, 4, mResetButton, 2);
            place(2, 4, mClearButton, 2);
            place(4, 4, mNextButton, 2);
        }
        else if (mInputState == NPC_INPUT_INTEGER)
        {
            place(0, 0, mScrollArea, 6, 3);
            place(0, 3, mMinusButton, 1);
            place(1, 3, mIntField, 4);
            place(5, 3, mPlusButton, 1);
            place(0, 4, mResetButton, 2);
            place(2, 4, mClearButton, 2);
            place(4, 4, mNextButton, 2);
        }
    }

    Layout &layout = getLayout();
    layout.setRowHeight(0, Layout::AUTO_SET);

    bool waitState = isWaitingForTheServer();
    mNextButton->setEnabled(!waitState);
    setCloseButton(waitState);

    redraw();

    mScrollArea->setVerticalScrollAmount(mScrollArea->getVerticalMaxScroll());
}

void NpcEventListener::event(Event::Channel channel,
                             const Event &event)
{
    if (channel != Event::NpcChannel)
        return;

    if (event.getType() == Event::Message)
    {
        NpcDialog *dialog = getDialog(event.getInt("id"));

        dialog->addText(event.getString("text"));
    }
    else if (event.getType() == Event::Menu)
    {
        NpcDialog *dialog = getDialog(event.getInt("id"));

        dialog->choiceRequest();

        int count = event.getInt("choiceCount");
        for (int i = 1; i <= count; i++)
            dialog->addChoice(event.getString("choice" + toString(i)));
        dialog->initChoiceSelection();
    }
    else if (event.getType() == Event::IntegerInput)
    {
        NpcDialog *dialog = getDialog(event.getInt("id"));

        int defaultValue = event.getInt("default", 0);
        int min = event.getInt("min", 0);
        int max = event.getInt("max", 2147483647);

        dialog->integerRequest(defaultValue, min, max);
    }
    else if (event.getType() == Event::StringInput)
    {
        NpcDialog *dialog = getDialog(event.getInt("id"));

        try
        {
            dialog->textRequest(event.getString("default"));
        }
        catch (BadEvent)
        {
            dialog->textRequest("");
        }
    }
    else if (event.getType() == Event::Next)
    {
        int id = event.getInt("id");
        NpcDialog *dialog = getDialog(id, false);

        if (!dialog)
        {
            int mNpcId = id;
            Net::getNpcHandler()->nextDialog(mNpcId);
            return;
        }

        dialog->showNextButton();
    }
    else if (event.getType() == Event::Close)
    {
        int id = event.getInt("id");
        NpcDialog *dialog = getDialog(id, false);

        if (!dialog)
        {
            int mNpcId = id;
            Net::getNpcHandler()->closeDialog(mNpcId);
            return;
        }

        dialog->showCloseButton();
    }
    else if (event.getType() == Event::CloseAll)
    {
        NpcDialog::closeAll();
    }
    else if (event.getType() == Event::End)
    {
        int id = event.getInt("id");
        NpcDialog *dialog = getDialog(id, false);

        if (dialog)
            dialog->close();
    }
    else if (event.getType() == Event::Post)
    {
        new NpcPostDialog(event.getInt("id"));
    }
}

NpcDialog *NpcEventListener::getDialog(int id, bool make)
{
    NpcDialogs::iterator diag = mNpcDialogs.find(id);
    NpcDialog *dialog = 0;

    if (diag == mNpcDialogs.end())
    {
        // Empty dialogs don't help
        if (make)
        {
            dialog = new NpcDialog(id);
            mNpcDialogs[id] = dialog;
        }
    }
    else
    {
        dialog = diag->second;
    }

    return dialog;
}

void NpcEventListener::removeDialog(int id)
{
    NpcDialogs::iterator it = mNpcDialogs.find(id);
    if (it != mNpcDialogs.end())
        mNpcDialogs.erase(it);
}