ViewHooksHolder.java

/**
 * ***************************************************************************
 * Copyright (c) 2010 Qcadoo Limited
 * Project: Qcadoo Framework
 * Version: 1.4
 *
 * This file is part of Qcadoo.
 *
 * Qcadoo is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * ***************************************************************************
 */
package com.qcadoo.view.internal.internal;

import java.util.List;
import java.util.Locale;

import org.json.JSONObject;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Lists;
import com.google.common.collect.Multimap;
import com.qcadoo.view.api.ViewDefinitionState;
import com.qcadoo.view.internal.api.ViewDefinition;
import com.qcadoo.view.internal.hooks.AbstractViewHookDefinition;
import com.qcadoo.view.internal.hooks.HookType;
import com.qcadoo.view.internal.hooks.ViewConstructionHook;
import com.qcadoo.view.internal.hooks.ViewLifecycleHook;

public class ViewHooksHolder {

    private final List<ViewConstructionHook> constructionHooks = Lists.newArrayList();

    private final Multimap<HookType, ViewLifecycleHook> lifecycleHooks = ArrayListMultimap.create();

    public void addHook(final AbstractViewHookDefinition viewHook) {
        if (viewHook instanceof ViewLifecycleHook) {
            addLifecycleHook((ViewLifecycleHook) viewHook);
        } else if (viewHook instanceof ViewConstructionHook) {
            addConstructionHook((ViewConstructionHook) viewHook);
        } else {
            throw new IllegalArgumentException("Unsupported hook: " + viewHook);
        }
    }

    private void addLifecycleHook(final ViewLifecycleHook lifecycleHook) {
        HookType type = lifecycleHook.getType();
        lifecycleHooks.put(type, lifecycleHook);
    }

    private void addConstructionHook(final ViewConstructionHook postConstructHook) {
        addPostConstructHook(postConstructHook);
    }

    public void removeHook(final AbstractViewHookDefinition viewHook) {
        if (viewHook instanceof ViewLifecycleHook) {
            removeLifecycleHook((ViewLifecycleHook) viewHook);
        } else if (viewHook instanceof ViewConstructionHook) {
            removeConstructionHook((ViewConstructionHook) viewHook);
        } else {
            throw new IllegalArgumentException("Unsupported hook: " + viewHook);
        }
    }

    private void removeLifecycleHook(final ViewLifecycleHook lifecycleHook) {
        HookType type = lifecycleHook.getType();
        lifecycleHooks.remove(type, lifecycleHook);
    }

    private void removeConstructionHook(final ViewConstructionHook constructionHook) {
        constructionHooks.remove(constructionHook);
    }

    private void addPostConstructHook(final ViewConstructionHook viewHookDefinition) {
        constructionHooks.add(viewHookDefinition);
    }

    public void callLifecycleHooks(final HookType type, final ViewDefinitionState viewDefinitionState) {
        for (ViewLifecycleHook lifecycleHook : lifecycleHooks.get(type)) {
            lifecycleHook.callWithViewState(viewDefinitionState);
        }
    }

    public void callConstructionHooks(final ViewDefinition viewDefinition, final JSONObject jsonObject, final Locale locale) {
        for (ViewConstructionHook constructionHook : constructionHooks) {
            constructionHook.callWithJSONObject(viewDefinition, jsonObject, locale);
        }
    }
}