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Provide more extensive listener features.

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This enables listeners to be notified of not only value updates, but also flag
changes and deletions by using a bitmask to specify what notifications are
desired.  The old API (which only provided a new/not new) flag is still
supported.  This also subsumes the feature to listen to local changes (that's
one of the bitmask options).
This commit is contained in:
Peter Johnson
2015-09-25 11:54:17 -07:00
parent 51064f5e75
commit 90959defd9
17 changed files with 246 additions and 128 deletions
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25
java/src/edu/wpi/first/wpilibj/tables/ITable.java
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@@ -297,6 +297,14 @@ public interface ITable {
*/
public String[] getStringArray(String key, String[] defaultValue);
/** Notifier flag values. */
public static final int NOTIFY_IMMEDIATE = 0x01;
public static final int NOTIFY_LOCAL = 0x02;
public static final int NOTIFY_NEW = 0x04;
public static final int NOTIFY_DELETE = 0x08;
public static final int NOTIFY_UPDATE = 0x10;
public static final int NOTIFY_FLAGS = 0x20;
/**
* Add a listener for changes to the table
* @param listener the listener to add
@@ -313,13 +321,9 @@ public interface ITable {
/**
* Add a listener for changes to the table
* @param listener the listener to add
* @param immediateNotify if true then this listener will be notified of all
* current entries (marked as new)
* @param localNotify if true then this listener will be notified of all
* local changes in addition to all remote changes
* @param flags bitmask specifying desired notifications
*/
public void addTableListener(ITableListener listener, boolean immediateNotify,
boolean localNotify);
public void addTableListenerEx(ITableListener listener, int flags);
/**
* Add a listener for changes to a specific key the table
@@ -334,13 +338,10 @@ public interface ITable {
* Add a listener for changes to a specific key the table
* @param key the key to listen for
* @param listener the listener to add
* @param immediateNotify if true then this listener will be notified of all
* current entries (marked as new)
* @param localNotify if true then this listener will be notified of all
* local changes in addition to all remote changes
* @param flags bitmask specifying desired notifications
*/
public void addTableListener(String key, ITableListener listener,
boolean immediateNotify, boolean localNotify);
public void addTableListenerEx(String key, ITableListener listener,
int flags);
/**
* This will immediately notify the listener of all current sub tables
* @param listener