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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.android.tv.menu;
import android.content.Context;
import android.view.View;
/**
* A base class of the item which will be displayed in the main menu.
* It contains the data such as title to represent a row.
* This is an abstract class and the sub-class could have it's own data for
* the row.
*/
public abstract class MenuRow {
private final Context mContext;
private final String mTitle;
private final int mHeight;
private final Menu mMenu;
private MenuRowView mMenuRowView;
// TODO: Check if the heightResId is really necessary.
public MenuRow(Context context, Menu menu, int titleResId, int heightResId) {
this(context, menu, context.getString(titleResId), heightResId);
}
public MenuRow(Context context, Menu menu, String title, int heightResId) {
mContext = context;
mTitle = title;
mMenu = menu;
mHeight = context.getResources().getDimensionPixelSize(heightResId);
}
/**
* Returns the context.
*/
protected Context getContext() {
return mContext;
}
/**
* Returns the menu object.
*/
public Menu getMenu() {
return mMenu;
}
/**
* Returns the title of this row.
*/
public String getTitle() {
return mTitle;
}
/**
* Returns the height of this row.
*/
public int getHeight() {
return mHeight;
}
/**
* Sets the menu row view.
*/
public void setMenuRowView(MenuRowView menuRowView) {
mMenuRowView = menuRowView;
}
/**
* Returns the menu row view.
*/
protected MenuRowView getMenuRowView() {
return mMenuRowView;
}
/**
* Updates the contents in this row.
* This method is called only by the menu when necessary.
*/
abstract public void update();
/**
* Indicates whether this row is shown in the menu.
*/
public boolean isVisible() {
return true;
}
/**
* Releases all the resources which need to be released.
* This method is called when the main menu is not available any more.
*/
public void release() {
}
/**
* Returns the ID of the layout resource for this row.
*/
abstract public int getLayoutResId();
/**
* Returns the ID of this row. This ID is used to select the row in the main menu.
*/
abstract public String getId();
/**
* This method is called when recent channels are changed.
*/
public void onRecentChannelsChanged() { }
/**
* This method is called when stream information is changed.
*/
public void onStreamInfoChanged() { }
/**
* Returns whether to hide the title when the row is selected.
*/
public boolean hideTitleWhenSelected() {
return false;
}
}
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