diff options
Diffstat (limited to 'java/org/gnu/emacs/EmacsDesktopNotification.java')
-rw-r--r-- | java/org/gnu/emacs/EmacsDesktopNotification.java | 202 |
1 files changed, 172 insertions, 30 deletions
diff --git a/java/org/gnu/emacs/EmacsDesktopNotification.java b/java/org/gnu/emacs/EmacsDesktopNotification.java index fb35e3fea1f..72569631a8c 100644 --- a/java/org/gnu/emacs/EmacsDesktopNotification.java +++ b/java/org/gnu/emacs/EmacsDesktopNotification.java @@ -24,9 +24,12 @@ import android.app.NotificationManager; import android.app.NotificationChannel; import android.app.PendingIntent; +import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; +import android.net.Uri; + import android.os.Build; import android.widget.RemoteViews; @@ -44,6 +47,16 @@ import android.widget.RemoteViews; public final class EmacsDesktopNotification { + /* Intent tag for notification action data. */ + public static final String NOTIFICATION_ACTION = "emacs:notification_action"; + + /* Intent tag for notification IDs. */ + public static final String NOTIFICATION_TAG = "emacs:notification_tag"; + + /* Action ID assigned to the broadcast receiver which should be + notified of any notification's being dismissed. */ + public static final String NOTIFICATION_DISMISSED = "org.gnu.emacs.DISMISSED"; + /* The content of this desktop notification. */ public final String content; @@ -66,10 +79,20 @@ public final class EmacsDesktopNotification /* The importance of this notification's group. */ public final int importance; + /* Array of actions and their user-facing text to be offered by this + notification. */ + public final String[] actions, titles; + + /* Delay in miliseconds after which this notification should be + automatically dismissed. */ + public final long delay; + public EmacsDesktopNotification (String title, String content, String group, String tag, int icon, - int importance) + int importance, + String[] actions, String[] titles, + long delay) { this.content = content; this.title = title; @@ -77,12 +100,69 @@ public final class EmacsDesktopNotification this.tag = tag; this.icon = icon; this.importance = importance; + this.actions = actions; + this.titles = titles; + this.delay = delay; } /* Functions for displaying desktop notifications. */ + /* Insert each action in actions and titles into the notification + builder BUILDER, with pending intents created with CONTEXT holding + suitable metadata. */ + + @SuppressWarnings ("deprecation") + private void + insertActions (Context context, Notification.Builder builder) + { + int i; + PendingIntent pending; + Intent intent; + Notification.Action.Builder action; + + if (actions == null) + return; + + for (i = 0; i < actions.length; ++i) + { + /* Actions named default should not be displayed. */ + if (actions[i].equals ("default")) + continue; + + intent = new Intent (context, EmacsActivity.class); + intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); + + /* Pending intents are specific to combinations of class, action + and data, but not information provided as extras. In order + that its target may be invoked with the action and tag set + below, generate a URL from those two elements and specify it + as the intent data, which ensures that the intent allocated + fully reflects the duo. */ + + intent.setData (new Uri.Builder ().scheme ("action") + .appendPath (tag).appendPath (actions[i]) + .build ()); + intent.putExtra (NOTIFICATION_ACTION, actions[i]); + intent.putExtra (NOTIFICATION_TAG, tag); + + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) + pending = PendingIntent.getActivity (context, 0, intent, + PendingIntent.FLAG_IMMUTABLE); + else + pending = PendingIntent.getActivity (context, 0, intent, 0); + + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) + { + action = new Notification.Action.Builder (0, titles[i], pending); + builder.addAction (action.build ()); + } + else + builder.addAction (0, titles[i], pending); + } + } + /* Internal helper for `display' executed on the main thread. */ @SuppressWarnings ("deprecation") /* Notification.Builder (Context). */ @@ -97,6 +177,7 @@ public final class EmacsDesktopNotification Intent intent; PendingIntent pending; int priority; + Notification.Builder builder; tem = context.getSystemService (Context.NOTIFICATION_SERVICE); manager = (NotificationManager) tem; @@ -108,13 +189,18 @@ public final class EmacsDesktopNotification (such as its importance) will be overridden. */ channel = new NotificationChannel (group, group, importance); manager.createNotificationChannel (channel); + builder = new Notification.Builder (context, group); - /* Create a notification object and display it. */ - notification = (new Notification.Builder (context, group) - .setContentTitle (title) - .setContentText (content) - .setSmallIcon (icon) - .build ()); + /* Create and configure a notification object and display + it. */ + + builder.setContentTitle (title); + builder.setContentText (content); + builder.setSmallIcon (icon); + builder.setTimeoutAfter (delay); + + insertActions (context, builder); + notification = builder.build (); } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { @@ -122,31 +208,35 @@ public final class EmacsDesktopNotification distinct categories, but permit an importance to be assigned to each individual notification. */ - switch (importance) + builder = new Notification.Builder (context); + builder.setContentTitle (title); + builder.setContentText (content); + builder.setSmallIcon (icon); + + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { - case 2: /* IMPORTANCE_LOW */ - default: - priority = Notification.PRIORITY_LOW; - break; - - case 3: /* IMPORTANCE_DEFAULT */ - priority = Notification.PRIORITY_DEFAULT; - break; - - case 4: /* IMPORTANCE_HIGH */ - priority = Notification.PRIORITY_HIGH; - break; + switch (importance) + { + case 2: /* IMPORTANCE_LOW */ + default: + priority = Notification.PRIORITY_LOW; + break; + + case 3: /* IMPORTANCE_DEFAULT */ + priority = Notification.PRIORITY_DEFAULT; + break; + + case 4: /* IMPORTANCE_HIGH */ + priority = Notification.PRIORITY_HIGH; + break; + } + + builder.setPriority (priority); + insertActions (context, builder); + notification = builder.build (); } - - notification = (new Notification.Builder (context) - .setContentTitle (title) - .setContentText (content) - .setSmallIcon (icon) - .setPriority (priority) - .build ()); - - if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN) - notification.priority = priority; + else + notification = builder.getNotification (); } else { @@ -170,6 +260,12 @@ public final class EmacsDesktopNotification intent = new Intent (context, EmacsActivity.class); intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); + intent.setData (new Uri.Builder () + .scheme ("action") + .appendPath (tag) + .build ()); + intent.putExtra (NOTIFICATION_ACTION, "default"); + intent.putExtra (NOTIFICATION_TAG, tag); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) pending = PendingIntent.getActivity (context, 0, intent, @@ -179,6 +275,25 @@ public final class EmacsDesktopNotification notification.contentIntent = pending; + /* Provide a cancellation intent to respond to notification + dismissals. */ + + intent = new Intent (context, CancellationReceiver.class); + intent.setAction (NOTIFICATION_DISMISSED); + intent.setPackage ("org.gnu.emacs"); + intent.setData (new Uri.Builder () + .scheme ("action") + .appendPath (tag) + .build ()); + intent.putExtra (NOTIFICATION_TAG, tag); + + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) + pending = PendingIntent.getBroadcast (context, 0, intent, + PendingIntent.FLAG_IMMUTABLE); + else + pending = PendingIntent.getBroadcast (context, 0, intent, 0); + + notification.deleteIntent = pending; manager.notify (tag, 2, notification); } @@ -199,4 +314,31 @@ public final class EmacsDesktopNotification } }); } + + + + /* Broadcast receiver. This is something of a system-wide callback + arranged to be invoked whenever a notification posted by Emacs is + dismissed, in order to relay news of its dismissal to + androidselect.c and run or remove callbacks as appropriate. */ + + public static class CancellationReceiver extends BroadcastReceiver + { + @Override + public void + onReceive (Context context, Intent intent) + { + String tag, action; + + if (intent == null || EmacsService.SERVICE == null) + return; + + tag = intent.getStringExtra (NOTIFICATION_TAG); + + if (tag == null) + return; + + EmacsNative.sendNotificationDeleted (tag); + } + }; }; |