org.kde.koala

Class KCompletionBase

public class KCompletionBase extends Object implements QtSupport, KCompletionBaseInterface

An abstract base class for adding a completion feature into widgets. This is a convenience class that provides the basic functions needed to add text completion support into widgets. All that is required is an implementation for the pure function setCompletedText. Refer to KLineEdit or KComboBox to see how easily such support can be added using this as a base class.

Author: Dawit Alemayehu

UNKNOWN: An abstract class for adding text completion support to widgets.

Field Summary
static intNextCompletionMatch
static intPrevCompletionMatch
static intSubstringCompletion
static intTextCompletion
Constants that represent the items whose short-cut key-binding is programmable.
Constructor Summary
protected KCompletionBase(Class dummy)
Method Summary
intcompletionMode()
Returns the current completion mode.
KCompletioncompletionObject(boolean hsig)
Returns a pointer to the current completion object.
KCompletioncompletionObject()
KCompletioncompObj()
Returns a pointer to the completion object.
booleanemitSignals()
Returns true if the object emits the signals.
KShortcutgetKeyBinding(int item)
Returns the key-binding used for the specified item.
booleanhandleSignals()
Returns true if the object handles the signals.
booleanisCompletionObjectAutoDeleted()
Returns true if the completion object is deleted upon this widget's destruction.
voidsetAutoDeleteCompletionObject(boolean autoDelete)
Sets the completion object when this widget's destructor is called.
voidsetCompletedItems(String[] items)
A pure function that must be implemented by all inheriting classes.
voidsetCompletedText(String text)
A pure function that must be implemented by all inheriting classes.
voidsetCompletionMode(int mode)
Sets the type of completion to be used.
voidsetCompletionObject(KCompletion compObj, boolean hsig)
Sets up the completion object to be used.
voidsetCompletionObject(KCompletion compObj)
voidsetEnableSignals(boolean enable)
Sets the widget's ability to emit text completion and rotation signals.
voidsetHandleSignals(boolean handle)
Enables this object to handle completion and rotation events internally.
booleansetKeyBinding(int item, KShortcut key)
Sets the key-binding to be used for manual text completion, text rotation in a history list as well as a completion list.
voiduseGlobalKeyBindings()
Sets this object to use global values for key-bindings.

Field Detail

NextCompletionMatch

public static final int NextCompletionMatch

PrevCompletionMatch

public static final int PrevCompletionMatch

SubstringCompletion

public static final int SubstringCompletion

TextCompletion

public static final int TextCompletion
Constants that represent the items whose short-cut key-binding is programmable. The default key-bindings for these items are defined in KStdAccel.

UNKNOWN: Constants that represent the items whose short-cut key-binding is programmable.

Constructor Detail

KCompletionBase

protected KCompletionBase(Class dummy)

Method Detail

completionMode

public int completionMode()
Returns the current completion mode. The return values are of type KGlobalSettings.Completion. See setCompletionMode() for details.

Returns: the completion mode.

UNKNOWN: Returns the current completion mode.

completionObject

public KCompletion completionObject(boolean hsig)
Returns a pointer to the current completion object. If the completion object does not exist, it is automatically created and by default handles all the completion signals internally unless hsig is set to false. It is also automatically destroyed when the destructor is called. You can change this default behavior using the KCompletionBase and KCompletionBase member functions. See also KCompletionBase.

Parameters: hsig if true, handles completion signals internally.

Returns: a pointer the completion object.

UNKNOWN: Returns a pointer to the current completion object.

completionObject

public KCompletion completionObject()

compObj

public KCompletion compObj()
Returns a pointer to the completion object. This method is only different from completionObject() in that it does not create a new KCompletion object even if the internal pointer is NULL. Use this method to get the pointer to a completion object when inheriting so that you won't inadvertently create it!!

Returns: the completion object or NULL if one does not exist.

UNKNOWN: Returns a pointer to the completion object.

emitSignals

public boolean emitSignals()
Returns true if the object emits the signals.

Returns: true if signals are emitted

UNKNOWN: Returns true if the object emits the signals.

getKeyBinding

public KShortcut getKeyBinding(int item)
Returns the key-binding used for the specified item. This methods returns the key-binding used to activate the feature feature given by item. If the binding contains modifier key(s), the SUM of the modifier key and the actual key code are returned.

Parameters: item the item to check

Returns: the key-binding used for the feature given by item.

See Also: KCompletionBase

UNKNOWN: Returns the key-binding used for the specified item.

handleSignals

public boolean handleSignals()
Returns true if the object handles the signals.

Returns: true if this signals are handled internally.

UNKNOWN: Returns true if the object handles the signals.

isCompletionObjectAutoDeleted

public boolean isCompletionObjectAutoDeleted()
Returns true if the completion object is deleted upon this widget's destruction. See setCompletionObject() and enableCompletion() for details.

Returns: true if the completion object will be deleted automatically

UNKNOWN: Returns true if the completion object is deleted upon this widget's destruction.

setAutoDeleteCompletionObject

public void setAutoDeleteCompletionObject(boolean autoDelete)
Sets the completion object when this widget's destructor is called. If the argument is set to true, the completion object is deleted when this widget's destructor is called.

Parameters: autoDelete if true, delete completion object on destruction.

UNKNOWN: Sets the completion object when this widget's destructor is called.

setCompletedItems

public void setCompletedItems(String[] items)
A pure function that must be implemented by all inheriting classes.

Parameters: items the list of completed items

UNKNOWN: A pure virtual function that must be implemented by all inheriting classes.

setCompletedText

public void setCompletedText(String text)
A pure function that must be implemented by all inheriting classes. This function is intended to allow external completion implementations to set completed text appropriately. It is mostly relevant when the completion mode is set to CompletionAuto and CompletionManual modes. See KCompletionBase.setCompletedText. Does nothing in CompletionPopup mode, as all available matches will be shown in the popup.

Parameters: text the completed text to be set in the widget.

UNKNOWN: A pure virtual function that must be implemented by all inheriting classes.

setCompletionMode

public void setCompletionMode(int mode)
Sets the type of completion to be used. The completion modes supported are those defined in KGlobalSettings(). See below.

Parameters: mode Completion type:

  • CompletionNone: Disables completion feature.
  • CompletionAuto: Attempts to find a match & fills-in the remaining text.
  • CompletionMan: Acts the same as the above except the action has to be manually triggered through pre-defined completion key.
  • CompletionShell: Mimics the completion feature found in typical nix shell environments.
  • CompletionPopup: Shows all available completions at once, in a listbox popping up.
  • @short Sets the type of completion to be used.

    setCompletionObject

    public void setCompletionObject(KCompletion compObj, boolean hsig)
    Sets up the completion object to be used. This method assigns the completion object and sets it up to automatically handle the completion and rotation signals internally. You should use this function if you want to share one completion object among your widgets or need to use a customized completion object. The object assigned through this method is not deleted when this object's destructor is invoked unless you explicitly call KCompletionBase after calling this method. Be sure to set the boolean argument to false, if you want to handle the completion signals yourself.

    Parameters: compObj a KCompletion() or a derived child object. hsig if true, handles completion signals internally.

    UNKNOWN: Sets up the completion object to be used.

    setCompletionObject

    public void setCompletionObject(KCompletion compObj)

    setEnableSignals

    public void setEnableSignals(boolean enable)
    Sets the widget's ability to emit text completion and rotation signals. Invoking this function with enable set to false will cause the completion & rotation signals not to be emitted. However, unlike setting the completion object to NULL using setCompletionObject, disabling the emition of the signals through this method does not affect the current completion object. There is no need to invoke this function by default. When a completion object is created through completionObject or setCompletionObject, these signals are set to emit automatically. Also note that disabling this signals will not necessarily interfere with the objects ability to handle these events internally. See setHandleSignals.

    Parameters: enable if false, disables the emition of completion & rotation signals.

    UNKNOWN: Sets the widget's ability to emit text completion and rotation signals.

    setHandleSignals

    public void setHandleSignals(boolean handle)
    Enables this object to handle completion and rotation events internally. This function simply assigns a booleanean value that indicates whether it should handle rotation and completion events or not. Note that this does not stop the object from emitting signals when these events occur.

    Parameters: handle if true, handle completion & rotation internally.

    UNKNOWN: Enables this object to handle completion and rotation events internally.

    setKeyBinding

    public boolean setKeyBinding(int item, KShortcut key)
    Sets the key-binding to be used for manual text completion, text rotation in a history list as well as a completion list. When the keys set by this function are pressed, a signal defined by the inheriting widget will be activated. If the default value or 0 is specified by the second parameter, then the key-binding as defined in the global setting should be used. This method returns false value for key is negative or the supplied key-binding conflicts with the ones set for one of the other features. NOTE: To use a modifier key (Shift, Ctrl, Alt) as part of the key-binding simply simply sum up the values of the modifier and the actual key. For example, to use CTRL+E as a key binding for one of the items, you would simply supply "Qt.CtrlButton + Qt.Key_E" as the second argument to this function.

    Parameters: item the feature whose key-binding needs to be set:

  • TextCompletion the manual completion key-binding.
  • PrevCompletionMatch the previous match key for multiple completion.
  • NextCompletionMatch the next match key for for multiple completion.
  • SubstringCompletion the key for substring completion
  • key key-binding used to rotate down in a list.

    Returns: true if key-binding can successfully be set.

    See Also: KCompletionBase

    UNKNOWN: Sets the key-binding to be used for manual text completion, text rotation in a history list as well as a completion list.

    useGlobalKeyBindings

    public void useGlobalKeyBindings()
    Sets this object to use global values for key-bindings. This method changes the values of the key bindings for rotation and completion features to the default values provided in KGlobalSettings. NOTE: By default inheriting widgets should uses the global key-bindings so that there will be no need to call this method.

    UNKNOWN: Sets this object to use global values for key-bindings.