/*
* This file is part of NucleusFramework for Bukkit, licensed under the MIT License (MIT).
*
* Copyright (c) JCThePants (www.jcwhatever.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.jcwhatever.nucleus.views;
import com.jcwhatever.nucleus.mixins.IPlayerReference;
import com.jcwhatever.nucleus.mixins.IPluginOwned;
import com.jcwhatever.nucleus.utils.PreCon;
import com.jcwhatever.nucleus.managed.scheduler.Scheduler;
import org.bukkit.entity.Player;
import org.bukkit.event.inventory.InventoryType;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.InventoryView;
import org.bukkit.plugin.Plugin;
import javax.annotation.Nullable;
/**
* Abstract implementation for all views.
*/
public abstract class View implements IPluginOwned, IPlayerReference {
private final Plugin _plugin;
private ViewSession _session;
private ViewCloseReason _recentCloseReason = ViewCloseReason.ESCAPE;
/**
* Constructor.
*
* @param plugin The owning plugin.
*/
public View(Plugin plugin) {
PreCon.notNull(plugin);
_plugin = plugin;
}
@Override
public Plugin getPlugin() {
return _plugin;
}
@Override
public Player getPlayer() {
PreCon.isValid(_session != null, "The views Session is not set yet.");
return _session.getPlayer();
}
/**
* Get the view inventory type.
*/
public abstract InventoryType getInventoryType();
/**
* Get the views {@link ViewSession}.
*/
public ViewSession getViewSession() {
PreCon.isValid(_session != null, "The views Session is not set yet.");
return _session;
}
/**
* Get the view instances {@link org.bukkit.inventory.InventoryView}.
*
* @return The inventory view or null if the view has not been shown yet or
* does not have an {@link org.bukkit.inventory.InventoryView}.
*/
@Nullable
public abstract InventoryView getInventoryView();
/**
* Get the view instances {@link org.bukkit.inventory.Inventory}.
*
* @return The inventory or null if the inventory hasn't been set yet or
* the view does not have an inventory.
*/
@Nullable
public abstract Inventory getInventory();
/**
* Get the most recent reason the view was closed.
*
* <p>Used by {@link ViewEventListener} to determine how
* to handle the {@link org.bukkit.event.inventory.InventoryCloseEvent}.</p>
*/
ViewCloseReason getCloseReason() {
return _recentCloseReason;
}
/**
* Reset the close reason back to {@link ViewCloseReason#ESCAPE}.
*
* <p>Used by {@link ViewEventListener} to reset the views close reason after handling its
* {@link org.bukkit.event.inventory.InventoryCloseEvent}.</p>
*/
void resetCloseReason() {
_recentCloseReason = ViewCloseReason.ESCAPE;
}
/**
* Open the view and show to the view session player.
*
* <p>Should not be invoked directly. Use {@link ViewSession}'s {@link ViewSession#next} or
* {@link ViewSession#previous} methods.</p>
*
* @param reason The reason the view is being opened.
*
* @return True if successful, otherwise false.
*/
boolean open(final ViewOpenReason reason) {
PreCon.notNull(reason);
Scheduler.runTaskLater(getPlugin(), new Runnable() {
@Override
public void run() {
openView(reason);
}
});
return true;
}
/**
* Close the view.
*
* <p>Should not be invoked directly. Use {@link ViewSession}'s {@link ViewSession#next} or
* {@link ViewSession#previous} methods instead.</p>
*
* @param reason The reason the view is being closed.
*
* @return True if successful.
*/
boolean close(ViewCloseReason reason) {
PreCon.notNull(reason);
PreCon.isValid(_session != null, "The views Session is not set yet.");
if (_session.getCurrent() != this)
return false;
_recentCloseReason = reason;
if (reason != ViewCloseReason.ESCAPE)
getPlayer().closeInventory();
onClose(reason);
return true;
}
/**
* Set the view session.
*/
void setViewSession(ViewSession session) {
PreCon.notNull(session);
if (_session != null && _session != session)
throw new IllegalStateException("A view instance can only be used for a single view session.");
_session = session;
onViewSessionSet(session);
}
/**
* Invoked when the view needs to be opened.
*
* <p>This method should handle creating the inventory and
* inventory view and showing them to the player.</p>
*
* @param reason The reason the view is being opened.
*/
protected abstract boolean openView(ViewOpenReason reason);
/**
* Invoked after the view is closed.
*
* @param reason The reason the view was closed.
*/
protected void onClose(ViewCloseReason reason) {}
/**
* Invoked after the view session is set.
*
* @param session The view session that is set.
*/
protected void onViewSessionSet(ViewSession session) {}
/**
* Invoked when the {@link ViewSession} is disposed.
*/
protected void onDispose() {}
}