org.alfresco.mobile.android.application.fragments.actions.AbstractActions.java Source code

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Here is the source code for org.alfresco.mobile.android.application.fragments.actions.AbstractActions.java

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/*
 *  Copyright (C) 2005-2015 Alfresco Software Limited.
 *
 *  This file is part of Alfresco Mobile for Android.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.alfresco.mobile.android.application.fragments.actions;

import java.io.File;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;

import org.alfresco.mobile.android.api.model.Node;
import org.alfresco.mobile.android.api.session.AlfrescoSession;
import org.alfresco.mobile.android.platform.accounts.AlfrescoAccount;
import org.alfresco.mobile.android.platform.io.AlfrescoStorageManager;
import org.alfresco.mobile.android.platform.utils.SessionUtils;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.text.TextUtils;
import android.view.ActionMode;
import android.view.Menu;

public abstract class AbstractActions<T> implements ActionMode.Callback {
    protected onFinishModeListener mListener;

    protected ActionMode mode;

    protected WeakReference<FragmentActivity> activityRef = null;

    protected WeakReference<Fragment> fragmentRef;

    protected boolean multiSelectionEnable = true;

    protected List<T> selectedItems = new ArrayList<T>();

    // ///////////////////////////////////////////////////////////////////////////
    // LIFECYCLE
    // ///////////////////////////////////////////////////////////////////////////
    @Override
    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
        this.mode = mode;
        getMenu(menu);
        return false;
    }

    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
        this.mode = mode;
        mode.setTitle(createTitle());
        return true;
    }

    @Override
    public void onDestroyActionMode(ActionMode mode) {
        mListener.onFinish();
        selectedItems.clear();
    }

    public void finish() {
        mode.finish();
    }

    // ///////////////////////////////////////////////////////////////////////////
    // INTERNALS
    // ///////////////////////////////////////////////////////////////////////////
    protected abstract String createTitle();

    // ///////////////////////////////////////////////////////////////////////////////////
    // LIST MANAGEMENT
    // ///////////////////////////////////////////////////////////////////////////////////
    public void selectNode(T n) {
        if (!multiSelectionEnable) {
            selectedItems.clear();
        }

        if (selectedItems.contains(n)) {
            removeNode(n);
        } else {
            addNode(n);
        }

        if (mode == null) {
            return;
        }
        if (selectedItems.isEmpty()) {
            mode.finish();
        } else {
            String title = createTitle();
            mode.setTitle((TextUtils.isEmpty(title) ? "" : title));
            mode.invalidate();
        }
    }

    public void selectNodes(List<T> nodes) {
        selectedItems.clear();
        for (T node : nodes) {
            addNode(node);
        }
        String title = createTitle();
        mode.setTitle((TextUtils.isEmpty(title) ? "" : title));
        mode.invalidate();
    }

    protected void addNode(T n) {
        if (n == null) {
            return;
        }

        if (!selectedItems.contains(n)) {
            selectedItems.add(n);
        }
    }

    protected void removeNode(T n) {
        selectedItems.remove(n);
    }

    // ///////////////////////////////////////////////////////////////////////////////////
    // MENU
    // ///////////////////////////////////////////////////////////////////////////////////
    private void getMenu(Menu menu) {
        menu.clear();
        getMenu(getActivity(), menu);
    }

    protected void getMenu(FragmentActivity activity2, Menu menu) {
    }

    // ///////////////////////////////////////////////////////////////////////////
    // ACTIONS
    // ///////////////////////////////////////////////////////////////////////////
    public static File getDownloadFile(final FragmentActivity activity, final Node node) {
        if (activity != null && node != null && SessionUtils.getAccount(activity) != null) {
            File folder = AlfrescoStorageManager.getInstance(activity)
                    .getDownloadFolder(SessionUtils.getAccount(activity));
            if (folder != null) {
                return new File(folder, node.getName());
            }
        }

        return null;
    }

    public static File getTempFile(final FragmentActivity activity, final Node node) {
        if (activity != null && node != null && SessionUtils.getAccount(activity) != null) {
            File folder = AlfrescoStorageManager.getInstance(activity)
                    .getTempFolder(SessionUtils.getAccount(activity));
            if (folder != null) {
                return new File(folder, node.getName());
            }
        }

        return null;
    }

    // ///////////////////////////////////////////////////////////////////////////////////
    // LISTENER
    // ///////////////////////////////////////////////////////////////////////////////////
    public interface onFinishModeListener {
        void onFinish();
    }

    public void setOnFinishModeListener(onFinishModeListener mListener) {
        this.mListener = mListener;
    }

    // ///////////////////////////////////////////////////////////////////////////////////
    // UTILS
    // ///////////////////////////////////////////////////////////////////////////////////
    protected FragmentActivity getActivity() {
        return activityRef.get();
    }

    protected Fragment getFragment() {
        return fragmentRef.get();
    }

    protected AlfrescoSession getSession() {
        if (getActivity() == null) {
            return null;
        }
        return SessionUtils.getSession(getActivity());
    }

    protected AlfrescoAccount getAccount() {
        if (getActivity() == null) {
            return null;
        }
        return SessionUtils.getAccount(getActivity());
    }

    protected T getCurrentItem() {
        if (selectedItems == null || selectedItems.isEmpty()) {
            return null;
        }
        return selectedItems.get(0);
    }

    public boolean hasMultiSelectionEnabled() {
        return multiSelectionEnable;
    }

}