Module javafx.controls
Package javafx.scene.control.skin

Class TextFieldSkin

java.lang.Object
javafx.scene.control.SkinBase<T>
javafx.scene.control.skin.TextInputControlSkin<TextField>
javafx.scene.control.skin.TextFieldSkin
All Implemented Interfaces:
Skin<TextField>
public class TextFieldSkin
extends TextInputControlSkin<TextField>
Default skin implementation for the TextField control.
Since:
9
See Also:
TextField

  • Constructor Details

    • TextFieldSkin

      public TextFieldSkin​(TextField control)
      Creates a new TextFieldSkin instance, installing the necessary child nodes into the Control children list, as well as the necessary input mappings for handling key, mouse, etc events.
      Parameters:
      control - The control that this skin should be installed onto.

  • Method Details

    • dispose

      public void dispose()
      Called by a Skinnable when the Skin is replaced on the Skinnable. This method allows a Skin to implement any logic necessary to clean up itself after the Skin is no longer needed. It may be used to release native resources. The methods Skin.getSkinnable() and Skin.getNode() should return null following a call to dispose. Calling dispose twice has no effect.
      Specified by:
      dispose in interface Skin<TextField>
      Overrides:
      dispose in class SkinBase<TextField>

    • computePrefWidth

      protected double computePrefWidth​(double height, double topInset, double rightInset, double bottomInset, double leftInset)
      Calculates the preferred width of this SkinBase. The default implementation calculates this width as the width of the area occupied by its managed children when they are positioned at their current positions at their preferred widths.
      Overrides:
      computePrefWidth in class SkinBase<TextField>
      Parameters:
      height - the height that should be used if preferred width depends on it
      topInset - the pixel snapped top inset
      rightInset - the pixel snapped right inset
      bottomInset - the pixel snapped bottom inset
      leftInset - the pixel snapped left inset
      Returns:
      the calculated preferred width

    • computeMinHeight

      protected double computeMinHeight​(double width, double topInset, double rightInset, double bottomInset, double leftInset)
      Computes the minimum allowable height of the Skin, based on the provided width.
      Overrides:
      computeMinHeight in class SkinBase<TextField>
      Parameters:
      width - The width of the Skin, in case this value might dictate the minimum height.
      topInset - the pixel snapped top inset
      rightInset - the pixel snapped right inset
      bottomInset - the pixel snapped bottom inset
      leftInset - the pixel snapped left inset
      Returns:
      A double representing the minimum height of this Skin.

    • computePrefHeight

      protected double computePrefHeight​(double width, double topInset, double rightInset, double bottomInset, double leftInset)
      Calculates the preferred height of this SkinBase. The default implementation calculates this height as the height of the area occupied by its managed children when they are positioned at their current positions at their preferred heights.
      Overrides:
      computePrefHeight in class SkinBase<TextField>
      Parameters:
      width - the width that should be used if preferred height depends on it
      topInset - the pixel snapped top inset
      rightInset - the pixel snapped right inset
      bottomInset - the pixel snapped bottom inset
      leftInset - the pixel snapped left inset
      Returns:
      the calculated preferred height

    • computeMaxHeight

      protected double computeMaxHeight​(double width, double topInset, double rightInset, double bottomInset, double leftInset)
      Computes the maximum allowable height of the Skin, based on the provided width.
      Overrides:
      computeMaxHeight in class SkinBase<TextField>
      Parameters:
      width - The width of the Skin, in case this value might dictate the maximum height.
      topInset - the pixel snapped top inset
      rightInset - the pixel snapped right inset
      bottomInset - the pixel snapped bottom inset
      leftInset - the pixel snapped left inset
      Returns:
      A double representing the maximum height of this Skin.

    • computeBaselineOffset

      public double computeBaselineOffset​(double topInset, double rightInset, double bottomInset, double leftInset)
      Calculates the baseline offset based on the first managed child. If there is no such child, returns Node.getBaselineOffset().
      Overrides:
      computeBaselineOffset in class SkinBase<TextField>
      Parameters:
      topInset - the pixel snapped top inset
      rightInset - the pixel snapped right inset
      bottomInset - the pixel snapped bottom inset
      leftInset - the pixel snapped left inset
      Returns:
      baseline offset

    • replaceText

      public void replaceText​(int start, int end, String txt)
      Replaces a range of characters with the given text. Call this implementation from behavior classes instead of the one provided on TextInputControl to ensure that the text scrolls as needed.
      Parameters:
      start - The starting index in the range, inclusive. This must be >= 0 and < the end.
      end - The ending index in the range, exclusive. This is one-past the last character to delete (consistent with the String manipulation methods). This must be > the start, and <= the length of the text.
      txt - The text that is to replace the range. This must not be null.
      See Also:
      TextInputControl.replaceText(int, int, String)

    • deleteChar

      public void deleteChar​(boolean previous)
      Deletes the character that follows or precedes the current caret position from the text if there is no selection, or deletes the selection if there is one. Call this implementation from behavior classes instead of the one provided on TextInputControl to ensure that the text scrolls as needed.
      Parameters:
      previous - whether to delete the preceding character.

    • getIndex

      public HitInfo getIndex​(double x, double y)
      Performs a hit test, mapping point to index in the content.
      Parameters:
      x - the x coordinate of the point.
      y - the y coordinate of the point.
      Returns:
      a HitInfo object describing the index and forward bias.

    • positionCaret

      public void positionCaret​(HitInfo hit, boolean select)
      Moves the caret to the specified position.
      Parameters:
      hit - the new position and forward bias of the caret.
      select - whether to extend selection to the new position.

    • getCharacterBounds

      public Rectangle2D getCharacterBounds​(int index)
      Returns the bounds of the character at a given index.
      Overrides:
      getCharacterBounds in class TextInputControlSkin<TextField>
      Parameters:
      index - the index
      Returns:
      the bounds of the character at a given index

    • getUnderlineShape

      protected PathElement[] getUnderlineShape​(int start, int end)
      Specified by:
      getUnderlineShape in class TextInputControlSkin<TextField>
      Parameters:
      start - the start
      end - the end
      Returns:
      the path elements describing the shape of the underline for the given range.

    • getRangeShape

      protected PathElement[] getRangeShape​(int start, int end)
      Specified by:
      getRangeShape in class TextInputControlSkin<TextField>
      Parameters:
      start - the start
      end - the end
      Returns:
      the path elements describing the bounding rectangles for the given range of text.

    • addHighlight

      protected void addHighlight​(List<? extends Node> nodes, int start)
      Adds highlight for composed text from Input Method.
      Specified by:
      addHighlight in class TextInputControlSkin<TextField>
      Parameters:
      nodes - the list of nodes
      start - the start

    • removeHighlight

      protected void removeHighlight​(List<? extends Node> nodes)
      Removes highlight for composed text from Input Method.
      Specified by:
      removeHighlight in class TextInputControlSkin<TextField>
      Parameters:
      nodes - the list of nodes

    • moveCaret

      public void moveCaret​(TextInputControlSkin.TextUnit unit, TextInputControlSkin.Direction dir, boolean select)
      Moves the caret by one of the given text unit, in the given direction. Note that only certain combinations are valid, depending on the implementing subclass.
      Specified by:
      moveCaret in class TextInputControlSkin<TextField>
      Parameters:
      unit - the unit of text to move by.
      dir - the direction of movement.
      select - whether to extends the selection to the new posititon.

    • layoutChildren

      protected void layoutChildren​(double x, double y, double w, double h)
      Called during the layout pass of the scenegraph.
      Overrides:
      layoutChildren in class SkinBase<TextField>
      Parameters:
      x - the x position
      y - the y position
      w - the width
      h - the height

    • getMenuPosition

      public Point2D getMenuPosition()
      Returns the position to be used for a context menu, based on the location of the caret handle or selection handles. This is supported only on touch displays and does not use the location of the mouse.
      Overrides:
      getMenuPosition in class TextInputControlSkin<TextField>
      Returns:
      the position to be used for this context menu

    • maskText

      protected String maskText​(String txt)
      This method may be overridden by subclasses to replace the displayed characters without affecting the actual text content. This is used to display bullet characters in PasswordField.
      Overrides:
      maskText in class TextInputControlSkin<TextField>
      Parameters:
      txt - the content that may need to be masked.
      Returns:
      the replacement string. This may just be the input string, or may be a string of replacement characters with the same length as the input string.

    • queryAccessibleAttribute

      protected Object queryAccessibleAttribute​(AccessibleAttribute attribute, Object... parameters)
      This method is called by the assistive technology to request the value for an attribute.

      This method is commonly overridden by subclasses to implement attributes that are required for a specific role.
      If a particular attribute is not handled, the superclass implementation must be called.

      Overrides:
      queryAccessibleAttribute in class SkinBase<TextField>
      Parameters:
      attribute - the requested attribute
      parameters - optional list of parameters
      Returns:
      the value for the requested attribute
      See Also:
      AccessibleAttribute, Node.queryAccessibleAttribute(javafx.scene.AccessibleAttribute, java.lang.Object...)