Java tutorial
/* * Twidere - Twitter client for Android * * 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 org.mariotaku.twidere.adapter; import static org.mariotaku.twidere.util.Utils.findDirectMessageInDatabases; import static org.mariotaku.twidere.util.Utils.formatToLongTimeString; import static org.mariotaku.twidere.util.Utils.openUserProfile; import org.mariotaku.twidere.R; import org.mariotaku.twidere.adapter.iface.IDirectMessagesAdapter; import org.mariotaku.twidere.model.DirectMessageCursorIndices; import org.mariotaku.twidere.model.ParcelableDirectMessage; import org.mariotaku.twidere.util.LazyImageLoader; import org.mariotaku.twidere.util.OnLinkClickHandler; import org.mariotaku.twidere.util.TwidereLinkify; import org.mariotaku.twidere.view.holder.DirectMessageConversationViewHolder; import android.app.Activity; import android.content.Context; import android.database.Cursor; import android.support.v4.widget.SimpleCursorAdapter; import android.text.Html; import android.view.Gravity; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.FrameLayout; import android.widget.FrameLayout.LayoutParams; public class DirectMessagesConversationAdapter extends SimpleCursorAdapter implements IDirectMessagesAdapter, OnClickListener { private boolean mDisplayProfileImage; private final LazyImageLoader mImageLoader; private float mTextSize; private final Context mContext; private DirectMessageCursorIndices mIndices; private int mNameDisplayOption; public DirectMessagesConversationAdapter(final Context context, final LazyImageLoader loader) { super(context, R.layout.direct_message_list_item, null, new String[0], new int[0], 0); mContext = context; mImageLoader = loader; } @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 boolean is_outgoing = cursor.getInt(mIndices.is_outgoing) == 1; final String name = cursor.getString(mIndices.sender_name); final String screen_name = cursor.getString(mIndices.sender_screen_name); holder.setTextSize(mTextSize); switch (mNameDisplayOption) { case NAME_DISPLAY_OPTION_CODE_NAME: { holder.name.setText(name); holder.screen_name.setText(null); holder.screen_name.setVisibility(View.GONE); break; } case NAME_DISPLAY_OPTION_CODE_SCREEN_NAME: { holder.name.setText("@" + screen_name); holder.screen_name.setText(null); holder.screen_name.setVisibility(View.GONE); break; } default: { holder.name.setText(name); holder.screen_name.setText("@" + screen_name); holder.screen_name.setVisibility(View.VISIBLE); break; } } final FrameLayout.LayoutParams lp = (LayoutParams) holder.name_container.getLayoutParams(); lp.gravity = is_outgoing ? Gravity.LEFT : Gravity.RIGHT; holder.name_container.setLayoutParams(lp); holder.text.setText(Html.fromHtml(cursor.getString(mIndices.text))); final TwidereLinkify linkify = new TwidereLinkify(holder.text); linkify.setOnLinkClickListener(new OnLinkClickHandler(context, account_id)); linkify.addAllLinks(); holder.text.setMovementMethod(null); 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 profile_image_url_string = cursor.getString(mIndices.sender_profile_image_url); mImageLoader.displayImage(holder.profile_image_left, profile_image_url_string); mImageLoader.displayImage(holder.profile_image_right, profile_image_url_string); 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 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 setNameDisplayOption(final String option) { if (NAME_DISPLAY_OPTION_NAME.equals(option)) { mNameDisplayOption = NAME_DISPLAY_OPTION_CODE_NAME; } else if (NAME_DISPLAY_OPTION_SCREEN_NAME.equals(option)) { mNameDisplayOption = NAME_DISPLAY_OPTION_CODE_SCREEN_NAME; } else { mNameDisplayOption = 0; } } @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); } }