danger.util
Class ActiveFolder.WeakDelegateList

java.lang.Object
  danger.util.SimpleWeakList
      danger.util.ActiveList.WeakDelegateList
          danger.util.ActiveFolder.WeakDelegateList

All Implemented Interfaces:

ActiveFolder.Delegate, ActiveList.Delegate

Enclosing interface:

ActiveFolder

public static class ActiveFolder.WeakDelegateList
extends ActiveList.WeakDelegateList
implements ActiveFolder.Delegate

List of delegates which are held onto weakly. Instances of this class are used to hold multiple delegates that have been added to a single list instance. All of the on*() methods call that same method with the same arguments on each of the delegates in the list. Note that the SimpleWeakList.add(java.lang.Object) and SimpleWeakList.remove(java.lang.Object) methods are simply the inherited Object-accepting ones, but the guts of this class assume that the only things ever added are appropriate delegates.

Field Summary

protected boolean	mOpen used while iterating
protected static int	ON_SET_DATA
protected static int	ON_SET_OPEN
protected static int	ON_SET_TITLE

Fields inherited from class danger.util.ActiveList.WeakDelegateList

mIndex, mItem, mItems, mList, mOperation, ON_ITEM_ADDED, ON_ITEM_REMOVED, ON_ITEM_UPDATED, ON_ITEMS_REORDERED, ON_RANGE_ADDED, ON_RANGE_REMOVED

Constructor Summary

ActiveFolder.WeakDelegateList()
Construct an instance with an initial capacity of 4.

ActiveFolder.WeakDelegateList(int initialCapacity)
Construct an instance.

Method Summary

protected void	accept(Object obj) Do the operation for a delegate.
ActiveFolder	getFolder() Get the folder that this delegate represents, if any.
void	onSetData(ActiveFolder folder, Object data) This method is called whenever the arbitrary data object of a folder is changed.
void	onSetOpen(ActiveFolder folder, boolean open) This method is called whenever the opened state of a folder is changed.
void	onSetTitle(ActiveFolder folder, String title) This method is called whenever the title of a folder is changed.

Methods inherited from class danger.util.ActiveList.WeakDelegateList

getDelegate, onItemAdded, onItemRemoved, onItemsReordered, onItemUpdated, onRangeAdded, onRangeRemoved

Methods inherited from class danger.util.SimpleWeakList

accept, add, contains, forEachAccept, forEachAccept, get, matchesTarget, remove, size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface danger.util.ActiveList.Delegate

onItemAdded, onItemRemoved, onItemsReordered, onItemUpdated, onRangeAdded, onRangeRemoved

Field Detail

ON_SET_OPEN

protected static final int ON_SET_OPEN

See Also:

Constant Field Values

ON_SET_TITLE

protected static final int ON_SET_TITLE

See Also:

Constant Field Values

ON_SET_DATA

protected static final int ON_SET_DATA

See Also:

Constant Field Values

mOpen

protected boolean mOpen

used while iterating

Constructor Detail

ActiveFolder.WeakDelegateList

public ActiveFolder.WeakDelegateList(int initialCapacity)

Construct an instance.

Parameters:

initialCapacity - initial capacity of the list; it will expand as needed

ActiveFolder.WeakDelegateList

public ActiveFolder.WeakDelegateList()

Construct an instance with an initial capacity of 4.

Method Detail

getFolder

public ActiveFolder getFolder()

Description copied from interface: ActiveFolder.Delegate

Get the folder that this delegate represents, if any. This method exists so that, when one is holding onto a folder, one can walk up the heritage of a tree of folders via the delegates to reach a top-level folder being viewed / manipulated. Unless you have a particularly good reason not to, this method should almost certainly be implemented as simply return null.

Specified by:

getFolder in interface ActiveFolder.Delegate

Returns:

null-ok; the folder that this delegate represents

onSetOpen

public void onSetOpen(ActiveFolder folder,
                      boolean open)

Description copied from interface: ActiveFolder.Delegate

This method is called whenever the opened state of a folder is changed. For example, StdActiveFolder.setOpen(boolean) is a concrete method that can change the opened state of a folder.

Specified by:

onSetOpen in interface ActiveFolder.Delegate

Parameters:

folder - non-null; the folder which was updated

open - the new opened state

onSetTitle

public void onSetTitle(ActiveFolder folder,
                       String title)

Description copied from interface: ActiveFolder.Delegate

This method is called whenever the title of a folder is changed. For example, StdActiveFolder.setTitle(java.lang.String) is a concrete method that can change the title of a folder.

Specified by:

onSetTitle in interface ActiveFolder.Delegate

Parameters:

folder - non-null; the folder which was updated

title - non-null; the new title

onSetData

public void onSetData(ActiveFolder folder,
                      Object data)

Description copied from interface: ActiveFolder.Delegate

This method is called whenever the arbitrary data object of a folder is changed. For example, StdActiveFolder.setData(java.lang.Object) is a concrete method that can change the data object of a folder.

Specified by:

onSetData in interface ActiveFolder.Delegate

Parameters:

folder - non-null; the folder which was updated

data - null-ok; the new data

accept

protected void accept(Object obj)

Description copied from class: ActiveList.WeakDelegateList

Do the operation for a delegate.

Overrides:

accept in class ActiveList.WeakDelegateList

Parameters:

obj - non-null; the delegate