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Class symantec.itools.awt.Slider

Object
   |
   +----Component
           |
           +----Canvas
                   |
                   +----symantec.itools.awt.Slider

public abstract class Slider

extends Canvas

Version:

1.1, July 17, 1997

Author:

Symantec

See Also:

HorizontalSlider, VerticalSlider

BORDER_X

Drawing constant for the horizontal axis.

BORDER_Y

Drawing constant for the vertical axis.

TICK_BOTH

Defines the slider tick style where the tick marks appear both to the left and right of the slider thumb.

TICK_BOTTOM

Defines the slider tick style where the tick marks appear below the slider thumb.

TICK_LEFT

Defines the slider tick style where the tick marks appear to the left of the slider thumb.

TICK_NONE

Defines the slider tick style where no tick marks are drawn.

TICK_RIGHT

Defines the slider tick style where the tick marks appear to the right of the slider thumb.

TICK_TOP

Defines the slider tick style where the tick marks appear above the slider thumb.

actionCommand

The command name of the action event fired by this component.

actionListener

The action listener to keep track of listeners for our action event.

cachedSize

The size of the component, the last time paint was called.

curPos

The current position of the slider thumb.

errors

Error strings.

forceCallDoReshape

Set if paint override should call DoReshape, even if the size has not changed.

freq

The current tick mark display frequency.

height

The current component height.

isAdded

is the component added to a container hierarchy?

max

The maximum value of the slider range.

min

The minimum value of the slider range.

prevPos

The position of the slider thumb last time control painted.

showBorder

Flag indicating if border should be drawn.

style

The current slider tick mark style.

tempMaxValue

Internal use.

tempMinValue

Internal use.

tempTickFreq

Internal use.

tempValue

Internal use.

tick

The tick marks for this slider.

width

The current component width.

symantec.itools.awt.Slider()

Constructs the Slider.

addActionListener(ActionListener)

Adds the specified action listener to receive action events from this component.

addMaxValueListener(PropertyChangeListener)

Adds a listener for the max property changes.

addMaxValueListener(VetoableChangeListener)

Adds a vetoable listener for the max property changes.

addMinValueListener(PropertyChangeListener)

Adds a listener for the min property changes.

addMinValueListener(VetoableChangeListener)

Adds a vetoable listener for the min property changes.

addNotify()

Tells this component that it has been added to a container.

addPropertyChangeListener(PropertyChangeListener)

Adds a listener for all event changes.

addVetoableChangeListener(VetoableChangeListener)

Adds a vetoable listener for all event changes.

doMove(int, boolean)

This routine updates the thumb position, paints the Slider, and posts a new action event as needed.

do_reshape(int, int)

This abstract function is called by reshape.

getActionCommand()

getMaxValue()

Returns the current maximum value of the slider.

getMinValue()

Returns the current minimum value of the slider.

getShowBorder()

getTickFreq()

Returns the current tick mark display frequency.

getTickStyle()

Returns the current slider tick mark style.

getValue()

Returns the current slider value.

isShowBorder()

Returns the current border display flag.

isValidMaxValue(int)

Is the given value valid for the Max property .

isValidMinValue(int)

Is the given value valid for the Min property .

moveThumb(int, boolean)

Handles the mouse pressing or dragging this component's thumb.

paint(Graphics)

removeActionListener(ActionListener)

Removes the specified action listener so it no longer receives action events from this component.

removeMaxValueListener(PropertyChangeListener)

Removes a listener for the max property changes.

removeMaxValueListener(VetoableChangeListener)

Removes a vetoable listener for the max property changes.

removeMinValueListener(PropertyChangeListener)

Removes a listener for the min property changes.

removeMinValueListener(VetoableChangeListener)

Removes a vetoable listener for the min property changes.

removeNotify()

Tells this component that it is being removed from a container.

removePropertyChangeListener(PropertyChangeListener)

Removes a listener for all event changes.

removeVetoableChangeListener(VetoableChangeListener)

Removes a vetoable listener for all event changes.

setActionCommand(String)

Sets the command name of the action event fired by this component.

setMaxValue(int)

Sets the maximum value of the slider.

setMinValue(int)

Sets the minimum value of the slider.

setShowBorder(boolean)

Sets the border display flag.

setTickFreq(int)

Sets the tick mark display frequency.

setTickStyle(int)

Sets the current slider tick mark style.

setValue(int)

Sets the slider value.

sourceActionEvent()

Fire an action event to the listeners

verifyContstrainedPropertyValues()

Called after addNotify to set the internally constrined properties to their temporary values to validate them now that the component has been added to the form.

protected static final int BORDER_X

Drawing constant for the horizontal axis.

protected static final int BORDER_Y

Drawing constant for the vertical axis.

public static final int TICK_BOTH

Defines the slider tick style where the tick marks appear both to the left and right of the slider thumb.

public static final int TICK_BOTTOM

Defines the slider tick style where the tick marks appear below the slider thumb.

public static final int TICK_LEFT

Defines the slider tick style where the tick marks appear to the left of the slider thumb.

public static final int TICK_NONE

Defines the slider tick style where no tick marks are drawn.

public static final int TICK_RIGHT

Defines the slider tick style where the tick marks appear to the right of the slider thumb.

public static final int TICK_TOP

Defines the slider tick style where the tick marks appear above the slider thumb.

protected java.lang.String actionCommand

The command name of the action event fired by this component.

protected java.awt.event.ActionListener actionListener

The action listener to keep track of listeners for our action event.

protected java.awt.Dimension cachedSize

The size of the component, the last time paint was called.

protected int curPos

The current position of the slider thumb.

protected transient java.util.ResourceBundle errors

Error strings.

protected boolean forceCallDoReshape

Set if paint override should call DoReshape, even if the size has not changed.

protected int freq

The current tick mark display frequency.

protected int height

The current component height.

protected boolean isAdded

is the component added to a container hierarchy?

protected int max

The maximum value of the slider range.

protected int min

The minimum value of the slider range.

protected int prevPos

The position of the slider thumb last time control painted.

protected boolean showBorder

Flag indicating if border should be drawn.

protected int style

The current slider tick mark style.

protected int tempMaxValue

Internal use. Max value stored until this component is added to a container. It is then used to set the real property value. This avoids code-gen order dependencies.

protected int tempMinValue

Internal use. Min value stored until this component is added to a container. It is then used to set the real property value. This avoids code-gen order dependencies.

protected int tempTickFreq

Internal use. Tick frequency value stored until this component is added to a container. It is then used to set the real property value. This avoids code-gen order dependencies.

protected int tempValue

Internal use. Slider value stored until this component is added to a container. It is then used to set the real property value. This avoids code-gen order dependencies.

protected transient symantec.itools.awt.SliderTick[] tick

The tick marks for this slider.

protected int width

The current component width.

protected Slider()

Constructs the Slider.

public synchronized void addActionListener(ActionListener l)

Adds the specified action listener to receive action events from this component.

Parameters:

l - the action listener

public synchronized void addMaxValueListener(PropertyChangeListener listener)

Adds a listener for the max property changes.

Parameters:

listener - the listener to add.

See Also:

removeMaxValueListener(java.beans.PropertyChangeListener)

public synchronized void addMaxValueListener(VetoableChangeListener listener)

Adds a vetoable listener for the max property changes.

Parameters:

listener - the listener to add.

See Also:

removeMaxValueListener(java.beans.VetoableChangeListener)

public synchronized void addMinValueListener(PropertyChangeListener listener)

Adds a listener for the min property changes.

Parameters:

listener - the listener to add.

See Also:

removeMinValueListener(java.beans.PropertyChangeListener)

public synchronized void addMinValueListener(VetoableChangeListener listener)

Adds a vetoable listener for the min property changes.

Parameters:

listener - the listener to add.

See Also:

removeMinValueListener(java.beans.VetoableChangeListener)

public synchronized void addNotify()

Tells this component that it has been added to a container. This is a standard Java AWT method which gets called by the AWT when this component is added to a container. Typically, it is used to create this component's peer. It has been overridden here to hook-up event listeners. It is also used to setup the component, creating the TextField as needed.

Overrides:

addNotify in class Canvas

See Also:

removeNotify

public synchronized void addPropertyChangeListener(PropertyChangeListener listener)

Adds a listener for all event changes.

Parameters:

listener - the listener to add.

See Also:

removePropertyChangeListener

public synchronized void addVetoableChangeListener(VetoableChangeListener listener)

Adds a vetoable listener for all event changes.

Parameters:

listener - the listener to add.

See Also:

removeVetoableChangeListener

protected void doMove(int pos,
                      boolean forcePost)

This routine updates the thumb position, paints the Slider, and posts a new action event as needed. If the thumb position has changed or the forcePost parameter is true the component will be painted and an action event posted.

Parameters:

pos - the new thumb position

forcePost - true forces painting the slider and posting of an action event even if the thumb position hasn't changed

protected abstract void do_reshape(int w,
                                   int h)

This abstract function is called by reshape. Override it to change the way the Slider is reshaped.

public java.lang.String getActionCommand()

Returns:

the command name of the action event fired by this component.

public int getMaxValue()

Returns the current maximum value of the slider.

See Also:

setMaxValue, getMinValue

public int getMinValue()

Returns the current minimum value of the slider.

See Also:

setMinValue, getMaxValue

public boolean getShowBorder()

Note: getShowBorder() is deprecated.

See Also:

isShowBorder

public int getTickFreq()

Returns the current tick mark display frequency. This is the range in value between each tick mark.

Returns:

the range in value between tick marks

See Also:

setTickFreq

public int getTickStyle()

Returns the current slider tick mark style.

Returns:

one of: TICK_LEFT, TICK_RIGHT, TICK_TOP, TICK_BOTTOM, TICK_BOTH, or TICK_NONE

See Also:

TICK_LEFT, TICK_RIGHT, TICK_TOP, TICK_BOTTOM, TICK_BOTH, TICK_NONE

public int getValue()

Returns the current slider value.

See Also:

setValue

public boolean isShowBorder()

Returns the current border display flag.

Returns:

true if the border is visible

See Also:

setShowBorder, getShowBorder

protected boolean isValidMaxValue(int i)

Is the given value valid for the Max property .

Parameters:

i - the given value

Returns:

true if the given value is acceptable, false if not.

protected boolean isValidMinValue(int i)

Is the given value valid for the Min property .

Parameters:

i - the given value

Returns:

true if the given value is acceptable, false if not.

protected void moveThumb(int i,
                         boolean forcePost)

Handles the mouse pressing or dragging this component's thumb. It is not typically called directly.

Parameters:

i - the mouse horizontal or vertical position coordinate

forcePost - true forces painting the slider and posting of an action event even if the thumb position hasn't changed

public void paint(Graphics g)

Overrides:

paint in class Canvas

public synchronized void removeActionListener(ActionListener l)

Removes the specified action listener so it no longer receives action events from this component.

Parameters:

l - the action listener

public synchronized void removeMaxValueListener(PropertyChangeListener listener)

Removes a listener for the max property changes.

Parameters:

listener - the listener to remove.

See Also:

addMaxValueListener(java.beans.PropertyChangeListener)

public synchronized void removeMaxValueListener(VetoableChangeListener listener)

Removes a vetoable listener for the max property changes.

Parameters:

listener - the listener to remove.

See Also:

addMaxValueListener(java.beans.VetoableChangeListener)

public synchronized void removeMinValueListener(PropertyChangeListener listener)

Removes a listener for the min property changes.

Parameters:

listener - the listener to remove.

See Also:

addMinValueListener(java.beans.PropertyChangeListener)

public synchronized void removeMinValueListener(VetoableChangeListener listener)

Removes a vetoable listener for the min property changes.

Parameters:

listener - the listener to remove.

See Also:

addMinValueListener(java.beans.VetoableChangeListener)

public synchronized void removeNotify()

Tells this component that it is being removed from a container. This is a standard Java AWT method which gets called by the AWT when this component is removed from a container. Typically, it is used to destroy the peers of this component and all its subcomponents. It has been overridden here to unhook event listeners.

Overrides:

removeNotify in class Component

See Also:

addNotify

public synchronized void removePropertyChangeListener(PropertyChangeListener listener)

Removes a listener for all event changes.

Parameters:

listener - the listener to remove.

See Also:

addPropertyChangeListener

public synchronized void removeVetoableChangeListener(VetoableChangeListener listener)

Removes a vetoable listener for all event changes.

Parameters:

listener - the listener to remove.

See Also:

addVetoableChangeListener

public void setActionCommand(String command) throws PropertyVetoException

Sets the command name of the action event fired by this component.

Parameters:

command - The name of the action event command fired by this component

Throws: PropertyVetoException

if the specified property value is unacceptable

public void setMaxValue(int max) throws PropertyVetoException

Sets the maximum value of the slider.

Parameters:

max - the new maximum slider value

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getMaxValue, setMinValue

public void setMinValue(int min) throws PropertyVetoException

Sets the minimum value of the slider.

Parameters:

min - the new minimum slider value

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getMinValue, setMaxValue

public void setShowBorder(boolean f) throws PropertyVetoException

Sets the border display flag.

Parameters:

f - true for the border to show

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getShowBorder

public void setTickFreq(int freq) throws PropertyVetoException

Sets the tick mark display frequency. This is the range in value between each tick mark.

Parameters:

freq - the range in value between tick marks

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getTickFreq

public void setTickStyle(int style) throws PropertyVetoException

Sets the current slider tick mark style.

Parameters:

style - the new tick mark style, one of TICK_LEFT, TICK_RIGHT, TICK_TOP, TICK_BOTTOM, TICK_BOTH, or TICK_NONE

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getTickStyle, TICK_LEFT, TICK_RIGHT, TICK_TOP, TICK_BOTTOM, TICK_BOTH, TICK_NONE

public void setValue(int pos) throws PropertyVetoException

Sets the slider value.

Parameters:

pos - the new slider value

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getValue

protected void sourceActionEvent()

Fire an action event to the listeners

protected void verifyContstrainedPropertyValues()

Called after addNotify to set the internally constrined properties to their temporary values to validate them now that the component has been added to the form. This is used to avoid code-gen order dependencies, since VC generates all property manipulating code before adding the component to its container. Subclasses should override this function for any internally constrained properties, and call the super version in the overridden version.

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