com.granita.tasks.groupings.BaseTaskViewDescriptor.java Source code

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Here is the source code for com.granita.tasks.groupings.BaseTaskViewDescriptor.java

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/*
 * Copyright (C) 2013 Marten Gajda <marten@dmfs.org>
 *
 * 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 com.granita.tasks.groupings;

import java.util.TimeZone;

import com.granita.tasks.R;
import com.granita.tasks.model.TaskFieldAdapters;
import com.granita.tasks.utils.DateFormatter;
import com.granita.tasks.utils.DateFormatter.DateFormatContext;
import com.granita.tasks.utils.ViewDescriptor;

import android.annotation.SuppressLint;
import android.database.Cursor;
import android.support.v4.util.SparseArrayCompat;
import android.text.TextUtils;
import android.text.format.Time;
import android.view.View;
import android.widget.FrameLayout.LayoutParams;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * A base implementation of a {@link ViewDescriptor}. It has a number of commonly used methods.
 * 
 * @author Marten Gajda <marten@dmfs.org>
 */
public abstract class BaseTaskViewDescriptor implements ViewDescriptor {

    /**
     * We use this to get the current time.
     */
    protected Time mNow;

    protected void setDueDate(TextView view, ImageView dueIcon, Time dueDate, boolean isClosed) {
        if (view != null && dueDate != null) {
            Time now = mNow;
            if (now == null) {
                now = mNow = new Time();
            }
            if (!now.timezone.equals(TimeZone.getDefault().getID())) {
                now.clear(TimeZone.getDefault().getID());
            }

            if (Math.abs(now.toMillis(false) - System.currentTimeMillis()) > 5000) {
                now.setToNow();
                now.normalize(true);
            }

            dueDate.normalize(true);

            view.setText(new DateFormatter(view.getContext()).format(dueDate, now, DateFormatContext.LIST_VIEW));
            if (dueIcon != null) {
                dueIcon.setVisibility(View.VISIBLE);
            }

            // highlight overdue dates & times, handle allDay tasks separately
            if ((!dueDate.allDay && dueDate.before(now) || dueDate.allDay
                    && (dueDate.year < now.year || dueDate.yearDay <= now.yearDay && dueDate.year == now.year))
                    && !isClosed) {
                view.setTextAppearance(view.getContext(), R.style.task_list_overdue_text);
            } else {
                view.setTextAppearance(view.getContext(), R.style.task_list_due_text);
            }
        } else if (view != null) {
            view.setText("");
            if (dueIcon != null) {
                dueIcon.setVisibility(View.GONE);
            }
        }
    }

    protected void setOverlay(View view, int position, int count) {
        View overlayTop = getView(view, R.id.overlay_top);
        View overlayBottom = getView(view, R.id.overlay_bottom);

        if (overlayTop != null) {
            overlayTop.setVisibility(position == 0 ? View.VISIBLE : View.GONE);
        }

        if (overlayBottom != null) {
            overlayBottom.setVisibility(position == count - 1 ? View.VISIBLE : View.GONE);
        }
    }

    protected void setDescription(View view, Cursor cursor) {
        String description = TaskFieldAdapters.DESCRIPTION.get(cursor);
        TextView descriptionView = (TextView) getView(view, android.R.id.text1);
        if (TextUtils.isEmpty(description)) {
            descriptionView.setVisibility(View.GONE);
        } else {
            descriptionView.setVisibility(View.VISIBLE);
            if (description.length() > 150) {
                description = description.substring(0, 150);
            }
            descriptionView.setText(description);
        }
    }

    protected void setColorBar(View view, Cursor cursor) {
        View colorbar = getView(view, R.id.colorbar);
        if (colorbar != null) {
            colorbar.setBackgroundColor(TaskFieldAdapters.LIST_COLOR.get(cursor));
        }
    }

    @SuppressLint("NewApi")
    protected void resetFlingView(View view) {
        View flingContentView = getView(view, getFlingContentViewId());
        if (flingContentView == null) {
            flingContentView = view;
        }

        if (android.os.Build.VERSION.SDK_INT >= 14) {
            if (flingContentView.getTranslationX() != 0) {
                flingContentView.setTranslationX(0);
                flingContentView.setAlpha(1);
            }
        } else {
            LayoutParams layoutParams = (LayoutParams) flingContentView.getLayoutParams();
            if (layoutParams.leftMargin != 0 || layoutParams.rightMargin != 0) {
                layoutParams.setMargins(0, layoutParams.topMargin, 0, layoutParams.bottomMargin);
                flingContentView.setLayoutParams(layoutParams);
            }
        }
    }

    protected <T extends View> T getView(View view, int viewId) {
        SparseArrayCompat<View> viewHolder = (SparseArrayCompat<View>) view.getTag();
        if (viewHolder == null) {
            viewHolder = new SparseArrayCompat<View>();
            view.setTag(viewHolder);
        }
        View res = viewHolder.get(viewId);
        if (res == null) {
            res = view.findViewById(viewId);
            viewHolder.put(viewId, res);
        }
        return (T) res;
    }

}