DropMode (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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javax.swing
Enum DropMode

java.lang.Object
  java.lang.Enum<DropMode>
      javax.swing.DropMode

All Implemented Interfaces:: Serializable, Comparable<DropMode>

public enum DropMode
extends Enum<DropMode>
extends Enum<DropMode>

Drop modes, used to determine the method by which a component tracks and indicates a drop location during drag and drop.

Since:: 1.6
See Also:: JTable.setDropMode(javax.swing.DropMode), JList.setDropMode(javax.swing.DropMode), JTree.setDropMode(javax.swing.DropMode), JTextComponent.setDropMode(javax.swing.DropMode)

Enum Constant Summary

INSERT
          The drop location should be tracked in terms of the position where new data should be inserted.

INSERT_COLS
          The drop location should be tracked in terms of the column index where new columns should be inserted to accommodate the dropped data.

INSERT_ROWS
          The drop location should be tracked in terms of the row index where new rows should be inserted to accommodate the dropped data.

ON
          The drop location should be tracked in terms of the index of existing items.

ON_OR_INSERT
          This mode is a combination of ON and INSERT, specifying that data can be dropped on existing items, or in insert locations as specified by INSERT.

ON_OR_INSERT_COLS
          This mode is a combination of ON and INSERT_COLS, specifying that data can be dropped on existing items, or as insert columns as specified by INSERT_COLS.

ON_OR_INSERT_ROWS
          This mode is a combination of ON and INSERT_ROWS, specifying that data can be dropped on existing items, or as insert rows as specified by INSERT_ROWS.

USE_SELECTION
          A component's own internal selection mechanism (or caret for text components) should be used to track the drop location.

Method Summary

static DropMode valueOf(String name)
          Returns the enum constant of this type with the specified name.

static DropMode[] values()
          Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Summary
`INSERT` The drop location should be tracked in terms of the position where new data should be inserted.
`INSERT_COLS` The drop location should be tracked in terms of the column index where new columns should be inserted to accommodate the dropped data.
`INSERT_ROWS` The drop location should be tracked in terms of the row index where new rows should be inserted to accommodate the dropped data.
`ON` The drop location should be tracked in terms of the index of existing items.
`ON_OR_INSERT` This mode is a combination of `ON` and `INSERT`, specifying that data can be dropped on existing items, or in insert locations as specified by `INSERT`.
`ON_OR_INSERT_COLS` This mode is a combination of `ON` and `INSERT_COLS`, specifying that data can be dropped on existing items, or as insert columns as specified by `INSERT_COLS`.
`ON_OR_INSERT_ROWS` This mode is a combination of `ON` and `INSERT_ROWS`, specifying that data can be dropped on existing items, or as insert rows as specified by `INSERT_ROWS`.
`USE_SELECTION` A component's own internal selection mechanism (or caret for text components) should be used to track the drop location.

Method Summary
`static DropMode`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static DropMode[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
`clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

Methods inherited from class java.lang.Object
`getClass, notify, notifyAll, wait, wait, wait`

Enum Constant Detail

USE_SELECTION

public static final DropMode USE_SELECTION

A component's own internal selection mechanism (or caret for text components) should be used to track the drop location.

ON

public static final DropMode ON

The drop location should be tracked in terms of the index of existing items. Useful for dropping on items in tables, lists, and trees.

INSERT

public static final DropMode INSERT

The drop location should be tracked in terms of the position where new data should be inserted. For components that manage a list of items (list and tree for example), the drop location should indicate the index where new data should be inserted. For text components the location should represent a position between characters. For components that manage tabular data (table for example), the drop location should indicate where to insert new rows, columns, or both, to accommodate the dropped data.

INSERT_ROWS

public static final DropMode INSERT_ROWS

The drop location should be tracked in terms of the row index where new rows should be inserted to accommodate the dropped data. This is useful for components that manage tabular data.

INSERT_COLS

public static final DropMode INSERT_COLS

The drop location should be tracked in terms of the column index where new columns should be inserted to accommodate the dropped data. This is useful for components that manage tabular data.

ON_OR_INSERT

public static final DropMode ON_OR_INSERT

This mode is a combination of ON and INSERT, specifying that data can be dropped on existing items, or in insert locations as specified by INSERT.

ON_OR_INSERT_ROWS

public static final DropMode ON_OR_INSERT_ROWS

This mode is a combination of ON and INSERT_ROWS, specifying that data can be dropped on existing items, or as insert rows as specified by INSERT_ROWS.

ON_OR_INSERT_COLS

public static final DropMode ON_OR_INSERT_COLS

This mode is a combination of ON and INSERT_COLS, specifying that data can be dropped on existing items, or as insert columns as specified by INSERT_COLS.

Method Detail

values

public static DropMode[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DropMode c : DropMode.values())
    System.out.println(c);

Returns:: an array containing the constants of this enum type, in the order they are declared

valueOf

public static DropMode valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:: name - the name of the enum constant to be returned.
Returns:: the enum constant with the specified name
Throws:: IllegalArgumentException - if this enum type has no constant with the specified name; NullPointerException - if the argument is null