Java tutorial
/* * Tweetings - Twitter client for Android * * Copyright (C) 2012-2013 RBD Solutions Limited <apps@tweetings.net> * Copyright (C) 2012 Mariotaku Lee <mariotaku.lee@gmail.com> * * 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 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 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/>. */ package com.dwdesign.tweetings.adapter; import static com.dwdesign.tweetings.util.Utils.findDirectMessageInDatabases; import static com.dwdesign.tweetings.util.Utils.formatToLongTimeString; import static com.dwdesign.tweetings.util.Utils.getBiggerTwitterProfileImage; import static com.dwdesign.tweetings.util.Utils.openUserProfile; import static com.dwdesign.tweetings.util.Utils.parseURL; import java.net.URL; import com.dwdesign.tweetings.R; import com.dwdesign.tweetings.model.DirectMessageConversationViewHolder; import com.dwdesign.tweetings.model.DirectMessageCursorIndices; import com.dwdesign.tweetings.model.ParcelableDirectMessage; import com.dwdesign.tweetings.util.DirectMessagesAdapterInterface; import com.dwdesign.tweetings.util.ImageLoaderWrapper; import com.dwdesign.tweetings.util.OnLinkClickHandler; import com.dwdesign.tweetings.util.TwidereLinkify; import android.app.Activity; import android.content.Context; import android.database.Cursor; import android.support.v4.widget.SimpleCursorAdapter; import android.view.Gravity; import android.view.View.OnClickListener; import android.view.View; import android.view.ViewGroup; import com.dwdesign.tweetings.app.TweetingsApplication; public class DirectMessagesConversationAdapter extends SimpleCursorAdapter implements DirectMessagesAdapterInterface, OnClickListener { private boolean mDisplayProfileImage, mDisplayName, mDisplayNameBoth; private final ImageLoaderWrapper mImageLoader; private float mTextSize; private final Context mContext; private DirectMessageCursorIndices mIndices; private final boolean mDisplayHiResProfileImage; public DirectMessagesConversationAdapter(final Context context) { super(context, R.layout.direct_message_list_item, null, new String[0], new int[0], 0); mContext = context; mImageLoader = TweetingsApplication.getInstance(context).getImageLoaderWrapper(); mDisplayHiResProfileImage = context.getResources().getBoolean(R.bool.hires_profile_image); } @Override public void bindView(final View view, final Context context, final Cursor cursor) { final int position = cursor.getPosition(); final DirectMessageConversationViewHolder holder = (DirectMessageConversationViewHolder) view.getTag(); final long account_id = cursor.getLong(mIndices.account_id); final long message_timestamp = cursor.getLong(mIndices.message_timestamp); final long sender_id = cursor.getLong(mIndices.sender_id); final boolean is_outgoing = account_id == sender_id; final String name = mDisplayName ? cursor.getString(mIndices.sender_name) : cursor.getString(mIndices.sender_screen_name); holder.setTextSize(mTextSize); final TwidereLinkify linkify = new TwidereLinkify(holder.text); linkify.setOnLinkClickListener(new OnLinkClickHandler(context, account_id)); linkify.addAllLinks(); holder.text.setMovementMethod(null); holder.name.setText(name); holder.name.setGravity(is_outgoing ? Gravity.LEFT : Gravity.RIGHT); holder.text.setText(cursor.getString(mIndices.text)); holder.text.setGravity(is_outgoing ? Gravity.LEFT : Gravity.RIGHT); holder.time.setText(formatToLongTimeString(mContext, message_timestamp)); holder.time.setGravity(is_outgoing ? Gravity.RIGHT : Gravity.LEFT); holder.profile_image_left.setVisibility(mDisplayProfileImage && is_outgoing ? View.VISIBLE : View.GONE); holder.profile_image_right.setVisibility(mDisplayProfileImage && !is_outgoing ? View.VISIBLE : View.GONE); if (mDisplayProfileImage) { final String sender_profile_image_url_string = cursor.getString(mIndices.sender_profile_image_url); final URL sender_profile_image_url = parseURL( mDisplayHiResProfileImage ? getBiggerTwitterProfileImage(sender_profile_image_url_string) : sender_profile_image_url_string); mImageLoader.displayProfileImage(holder.profile_image_left, String.valueOf(sender_profile_image_url)); mImageLoader.displayProfileImage(holder.profile_image_right, String.valueOf(sender_profile_image_url)); holder.profile_image_left.setTag(position); holder.profile_image_right.setTag(position); } super.bindView(view, context, cursor); } @Override public ParcelableDirectMessage findItem(final long id) { final int count = getCount(); for (int i = 0; i < count; i++) { if (getItemId(i) == id) return getDirectMessage(i); } return null; } public ParcelableDirectMessage getDirectMessage(final int position) { final Cursor item = getItem(position); final long account_id = item.getLong(mIndices.account_id); final long message_id = item.getLong(mIndices.message_id); return findDirectMessageInDatabases(mContext, account_id, message_id); } @Override public Cursor getItem(final int position) { return (Cursor) super.getItem(position); } @Override public View newView(final Context context, final Cursor cursor, final ViewGroup parent) { final View view = super.newView(context, cursor, parent); final Object tag = view.getTag(); if (!(tag instanceof DirectMessageConversationViewHolder)) { final DirectMessageConversationViewHolder holder = new DirectMessageConversationViewHolder(view); view.setTag(holder); holder.profile_image_left.setOnClickListener(this); holder.profile_image_right.setOnClickListener(this); } return view; } @Override public void setDisplayName(final boolean display) { if (display != mDisplayName) { mDisplayName = display; notifyDataSetChanged(); } } @Override public void setDisplayNameBoth(final boolean display) { if (display != mDisplayNameBoth) { mDisplayNameBoth = display; notifyDataSetChanged(); } } @Override public void onClick(final View view) { final Object tag = view.getTag(); final ParcelableDirectMessage status = tag instanceof Integer ? getDirectMessage((Integer) tag) : null; if (status == null) return; switch (view.getId()) { case R.id.profile_image_left: case R.id.profile_image_right: { if (mContext instanceof Activity) { openUserProfile((Activity) mContext, status.account_id, status.sender_id, status.sender_screen_name); } break; } } } @Override public void setDisplayProfileImage(final boolean display) { if (display != mDisplayProfileImage) { mDisplayProfileImage = display; notifyDataSetChanged(); } } @Override public void setTextSize(final float text_size) { if (text_size != mTextSize) { mTextSize = text_size; notifyDataSetChanged(); } } @Override public Cursor swapCursor(final Cursor cursor) { if (cursor != null) { mIndices = new DirectMessageCursorIndices(cursor); } else { mIndices = null; } return super.swapCursor(cursor); } }