/*
Copyright (c) 2011, Sony Ericsson Mobile Communications AB
Copyright (C) 2012-2013 Sony Mobile Communications AB
All rights reserved.
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* Redistributions in binary form must reproduce the above copyright notice,
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* Neither the name of the Sony Mobile Communications AB nor the names
of its contributors may be used to endorse or promote products derived from
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*/
package com.sonyericsson.extras.liveware.aef.widget;
import com.sonyericsson.extras.liveware.aef.registration.Registration.DeviceColumns;
import com.sonyericsson.extras.liveware.aef.registration.Registration.ExtensionColumns;
/**
* <h1>The Widget API is a part of the Smart Extension APIs</h1>
* <p>
* Some of our advanced accessories will support the Widget API.
* The Widget API enables the Extension to display a live image on the
* main menu of the accessory, sort of a preview of what the Extension is about.
* </p>
* <p>Topics covered here:
* <ol>
* <li><a href="#Initial">Initial Widget image</a>
* <li><a href="#WidgetSize">How do Extensions find out correct Widget image size</a>
* <li><a href="#Refresh">Refreshing the Widget image</a>
* </ol>
* </p>
* <a name="Initial"></a>
* <h3>Initial Widget image</h3>
* <p>
* Widgets will usually be the building blocks for the main menu of the accessories
* that support Widgets.
* At certain occasions, the Host Application will request a Widget image from the
* Extension, {@link Intents#WIDGET_START_REFRESH_IMAGE_INTENT}. E.g. when the user powers on the accessory,
* or when a new Widget Extension is installed.
* When the Extension receives this Intent, it must send back a Widget image to the Host
* Application, {@link Intents#WIDGET_IMAGE_UPDATE_INTENT} or {@link Intents#WIDGET_PROCESS_LAYOUT_INTENT}.
* The Extension can continue to update its image when it finds it appropriate as long as the intent
* {@link Intents#WIDGET_STOP_REFRESH_IMAGE_INTENT} has not been received. The extension can resume updating
* its image when {@link Intents#WIDGET_START_REFRESH_IMAGE_INTENT} has been received again.
* </p>
* <a name="WidgetSize"></a>
* <h3>How do Extensions find out correct Widget image size</h3>
* <p>
* Before an Extension sends the Widget image to the Host Application, it has to figure out
* what size the image should be. This might vary between accessories as some have a larger
* display. This information can be found using the Registration & Capabilities API.
* Every Host Application will write down its parameters into the Capabilities database.
* </p>
* <a name="Refresh"></a>
* <h3>Refreshing the Widget image</h3>
* <p>
* In order to allow the user to interact with the Widget, the Extension will get touch events
* that occur when your Widget is in focus on the accessory display, {@link Intents#WIDGET_ONTOUCH_INTENT}.
* This way, the Extension receives user feedback and can adapt, refresh Widget image.
* </p>
* <p>
* As an example, one could mention a media player controller Widget. The initial Widget image shows a couple
* of buttons, play/pause, previous, next, etc. When a user presses somewhere on the Widget, the
* {@link Intents#WIDGET_ONTOUCH_INTENT} will be sent to the Extension. Since the Extension provided the
* initial image, it knows the exact layout/position of the buttons and can that way determine what button
* that was pressed and take action. In this case, it could be to start playing a song. The Extension can
* also choose to update the Widget image so that it reflects the latest state, instead of play button,
* it might show the pause button and the title of the playing song.
* </p>
*/
public class Widget {
/**
* @hide
* This class is only intended as a utility class containing declared constants
* that will be used by Widget API Extension developers.
*/
protected Widget() {
}
/**
* Intents sent between Widget Extensions and Accessory Host Applications.
*/
public interface Intents {
/**
* Intent sent by the Accessory Host Application whenever it wants the Widget to start update it's Widget image.
* Usually this Intent will be sent out when the accessory just starts and is about to show the Widget menu.
* The Widget image should be updated as soon as possible and after the initial update the Widget image should
* be updated occasionally until WIDGET_STOP_REFRESH_IMAGE_INTENT is received
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AHA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_EXTENSION_KEY}</li>
* </ul>
* </p>
* @since 1.0
*/
static final String WIDGET_START_REFRESH_IMAGE_INTENT = "com.sonyericsson.extras.aef.widget.START_REFRESH_IMAGE_REQUEST";
/**
* Intent sent by the Accessory Host Application whenever it wants the Widget to stop/pause update it's Widget image.
* The Widget should resume updating its image when WIDGET_START_REFRESH_IMAGE_INTENT is received.
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AHA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_EXTENSION_KEY}</li>
* </ul>
* </p>
* @since 1.0
*/
static final String WIDGET_STOP_REFRESH_IMAGE_INTENT = "com.sonyericsson.extras.aef.widget.STOP_REFRESH_IMAGE_REQUEST";
/**
* Intent sent by the Extension whenever it wants to update the Accessory display by sending an XML layout.
* <p>
* This intent should be sent with enforced security by supplying the host application permission
* to sendBroadcast(Intent, String). {@link com.sonyericsson.extras.liveware.aef.registration.Registration#HOSTAPP_PERMISSION}
* </p>
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AEA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_DATA_XML_LAYOUT}</li>
* </ul>
* </p>
* @since 2.0
*/
static final String WIDGET_PROCESS_LAYOUT_INTENT = "com.sonyericsson.extras.aef.widget.PROCESS_LAYOUT";
/**
* Intent used by the Widget Extension whenever it wants to update its widget image.
* The Widget image should be updated occasionally.
* If the Extension tries to update its Widget image to often, the Host Application will ignore the requests.
* <p>
* This intent should be sent with enforced security by supplying the host application permission
* to sendBroadcast(Intent, String). {@link com.sonyericsson.extras.liveware.aef.registration.Registration#HOSTAPP_PERMISSION}
* </p>
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_WIDGET_IMAGE_URI}</li>
* <li>{@link #EXTRA_WIDGET_IMAGE_DATA}</li>
* <li>{@link #EXTRA_AEA_PACKAGE_NAME}</li>
* </ul>
* </p>
* @since 1.0
*/
static final String WIDGET_IMAGE_UPDATE_INTENT = "com.sonyericsson.extras.aef.widget.IMAGE_UPDATE";
/**
* This intent may be used by the Widget Extension as a response to a {@link #WIDGET_ONTOUCH_INTENT}.
* The widget should send this intent when it does not want to perform any action based on the on touch intent.
* When receiving this intent the host application is free to stop interaction with this widget and enter a new
* level or state internally.
* <p>
* This intent should be sent with enforced security by supplying the host application permission
* to sendBroadcast(Intent, String). {@link com.sonyericsson.extras.liveware.aef.registration.Registration#HOSTAPP_PERMISSION}
* </p>
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AEA_PACKAGE_NAME}</li>
* </ul>
* </p>
* @since 1.0
*/
static final String WIDGET_ENTER_NEXT_LEVEL_INTENT = "com.sonyericsson.extras.aef.widget.ENTER_NEW_LEVEL";
/**
* Intent sent by the Host Application to the Widget Extension whenever a user interacts with the Widget image.
* Usually as a result of this Intent the Widget Extension will update its Widget image and take appropriate action
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AHA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_EVENT_TYPE}</li>
* <li>{@link #EXTRA_EVENT_X_POS}</li>
* <li>{@link #EXTRA_EVENT_Y_POS}</li>
* <li>{@link #EXTRA_EXTENSION_KEY}</li>
* </ul>
* </p>
* @since 1.0
*/
static final String WIDGET_ONTOUCH_INTENT = "com.sonyericsson.extras.aef.widget.ONTOUCH";
/**
* Intent sent by the Host Application to the Widget Extension whenever an click
* event is detected on a graphical object referenced from a layout.
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AHA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_EVENT_TYPE}</li>
* <li>{@link #EXTRA_EXTENSION_KEY}</li>
* <li>{@link #EXTRA_LAYOUT_REFERENCE}</li>
* </ul>
* </p>
* @since 2.0
*/
static final String WIDGET_OBJECT_CLICK_EVENT_INTENT = "com.sonyericsson.extras.aef.widget.OBJECT_CLICK_EVENT";
/**
* Intent sent by the Widget extension whenever it wants to update an image in an ImageView on the accessory.
* The image can be a URI or an array of a raw image, like JPEG
* The image will replace any previous sent image with the same reference.
* <p>
* This intent should be sent with enforced security by supplying the host application permission
* to sendBroadcast(Intent, String). {@link com.sonyericsson.extras.liveware.aef.registration.Registration#HOSTAPP_PERMISSION}
* </p>
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AEA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_LAYOUT_REFERENCE}</li>
* <li>{@link #EXTRA_WIDGET_IMAGE_URI}</li>
* <li>{@link #EXTRA_WIDGET_IMAGE_DATA}</li>
* </ul>
* </p>
* @since 2.0
*/
static final String WIDGET_SEND_IMAGE_INTENT = "com.sonyericsson.extras.aef.widget.SEND_IMAGE";
/**
* Intent sent by the Widget extension whenever it wants to update a text in a TextView on the accessory.
* The text will replace any previous sent text with the same reference.
* <p>
* This intent should be sent with enforced security by supplying the host application permission
* to sendBroadcast(Intent, String). {@link com.sonyericsson.extras.liveware.aef.registration.Registration#HOSTAPP_PERMISSION}
* </p>
* <p>
* Intent-extra data:
* </p>
* <ul>
* <li>{@link #EXTRA_AEA_PACKAGE_NAME}</li>
* <li>{@link #EXTRA_LAYOUT_REFERENCE}</li>
* <li>{@link #EXTRA_WIDGET_TEXT}</li>
* </ul>
* </p>
* @since 2.0
*/
static final String WIDGET_SEND_TEXT_INTENT = "com.sonyericsson.extras.aef.widget.SEND_TEXT";
/**
* The name of the Intent-extra used to identify the Host Application.
* The Host Application will send its package name
* <P>
* TYPE: TEXT
* </P>
* @since 1.0
*/
static final String EXTRA_AHA_PACKAGE_NAME = "aha_package_name";
/**
* The name of the Intent-extra used to identify the Extension.
* The Extension will send its package name
* <P>
* TYPE: TEXT
* </P>
* @since 1.0
*/
static final String EXTRA_AEA_PACKAGE_NAME = "aea_package_name";
/**
* The name of the Intent-extra used to identify the URI of the Widget image.
* If the image is in raw data (e.g. an array of bytes) use {@link #EXTRA_WIDGET_IMAGE_DATA} instead.
* The image is displayed in the Widget row on the Accessory display.
* The image can be updated by the Extension at a later stage
* <P>
* TYPE: TEXT
* </P>
* @since 1.0
*/
static final String EXTRA_WIDGET_IMAGE_URI = "widget_image_uri";
/**
* The name of the Intent-extra used to identify the Widget image.
* This Intent-extra should be used if the image is in raw data (e.g. an array of bytes).
* The image is displayed in the Widget row on the Accessory display.
* The image can be updated by the Extension at a later stage
* <P>
* TYPE: BYTE ARRAY
* </P>
* @since 1.0
*/
static final String EXTRA_WIDGET_IMAGE_DATA = "widget_image_data";
/**
* The name of the Intent-extra used to identify the touch event
* <P>
* TYPE: INTEGER (int)
* </P>
* <P>
* ALLOWED VALUES:
* <ul>
* <li>{@link #EVENT_TYPE_SHORT_TAP}</li>
* <li>{@link #EVENT_TYPE_LONG_TAP}</li>
* </ul>
* </P>
* @since 1.0
*/
static final String EXTRA_EVENT_TYPE = "widget_event_type";
/**
* The name of the Intent-extra used to carry the X coordinate of the touch event
* <P>
* TYPE: INTEGER (int)
* </P>
* @since 1.0
*/
static final String EXTRA_EVENT_X_POS = "widget_event_x_pos";
/**
* The name of the Intent-extra used to carry the Y coordinate of the touch event
* <P>
* TYPE: INTEGER (int)
* </P>
* @since 1.0
*/
static final String EXTRA_EVENT_Y_POS = "widget_event_y_pos";
/**
* The name of the Intent-extra containing the key set by the extension
* in {@link ExtensionColumns#EXTENSION_KEY}. This Intent-data is present in
* all Intents sent by accessory host application, except where
* {@link android.app.Activity#startActivity(android.content.Intent)}
* is used. See section <a href="Registration.html#Security">Security</a>
* for more information
*
* @since 1.0
*/
static final String EXTRA_EXTENSION_KEY = "extension_key";
/**
* The name of the Intent-extra used to identify the data XML layout to be processed by the host application
* and displayed by the accessory.
* The layout resource id is used to identify the layout.
* <P>
* This is a standard Android layout, where a subset of the Android views are supported.
* </P>
* </P>
* <h3>Dimensions</h3>
* <P>
* The px dimensions is the only dimension supported.
* The only exception is text sizes which can be specified using sp to indicate that the text
* shall be scaled according to the text size setting on the accessory.
* </P>
* <h3>ViewGroups</h3>
* <P>
* The following ViewGroups are supported:
* <ul>
* <li>AbsoluteLayout</li>
* <li>FrameLayout</li>
* <li>LinearLayout</li>
* <li>RelativeLayout</li>
* </ul>
* All XML attributes are supported for the supported ViewGroups.
* </P>
* <h3>Views</h3>
* <P>
* The following Views are supported:
* <ul>
* <li>View</li>
* <li>ImageView</li>
* <li>TextView</li>
* </ul>
* An accessory may support only a subset of these layouts.
* {@link DeviceColumns#LAYOUT_SUPPORT} specifies which Views that are
* supported for a certain accessory.
* </p>
* <p>
* The following View XML attributes are supported
* <ul>
* <li>android:background - restricted to a solid color such as "#ff000000" (black)</li>
* <li>android:clickable - {@link #WIDGET_OBJECT_TOUCH_EVENT_INTENT} are sent for views that are clickable</li>
* <li>android:id</li>
* <li>android:padding</li>
* <li>android:paddingBottom</li>
* <li>android:paddingLeft</li>
* <li>android:paddingRight</li>
* <li>android:paddingTop</li>
* </ul>
* </P>
* <h3>ImageView</h3>
* <P>
* For an ImageView the following XML attributes are supported
* <ul>
* <li>android:src - can be a BitmapDrawable or a NinePatchDrawable</li>
* <li>android:scaleType</li>
* </ul>
* </P>
* <h3>TextView</h3>
* <P>
* For a TextView the following XML attributes are supported
* <ul>
* <li>android:ellipsize - can be none, start, middle or end</li>
* <li>android:gravity</li>
* <li>android:lines</li>
* <li>android:maxLines</li>
* <li>android:singleLine</li>
* <li>android:text</li>
* <li>android:textColor</li>
* <li>android:textSize - Not all text sizes are supported by all accessories.
* If a not supported text size is used the accessory will select the closest available text size.
* See the accessory white paper for a list of supported text sizes.
* </br>
* If the sp unit is used the text is scaled according to settings on the accessories (if supported by the accessory).
* If the px unit is used the text is not affected by any settings on the accessory.
* </li>
* <li>android:textStyle</li>
* </ul>
* </P>
* <P>
* TYPE: INTEGER
* </P>
* @since 2.0
*/
static final String EXTRA_DATA_XML_LAYOUT = "data_xml_layout";
/**
* The name of the Intent-extra used to identify a reference within an extension.
* The extension may use the same reference in multiple layouts.
* A reference is a text or an image owned by the extension and will
* be used to map between layouts and images/texts.
* Corresponds to the android:id XML attribute in the layout.
* <P>
* TYPE: INTEGER
* </P>
* @since 2.0
*/
static final String EXTRA_LAYOUT_REFERENCE = "layout_reference";
/**
* The name of the Intent-extra used when sending a text (String)
* from the extension to the accessory. The accessory will map the text
* to a layout reference.
* <P>
* TYPE: STRING
* </P>
* @since 2.0
*/
static final String EXTRA_WIDGET_TEXT = "text_from extension";
/**
* The event type is a short tap.
*
* @since 1.0
*/
static final int EVENT_TYPE_SHORT_TAP = 0;
/**
* The event type is a long tap
*
* @since 1.0
*/
static final int EVENT_TYPE_LONG_TAP = 1;
}
}