Examples of org.apache.pivot.wtk.validation.Validator

org.apache.pivot.wtk.validation.Validator
Validation interface for text components. Allows the programmer to specify constraints on text data.
This is indicated visually to the user (a red background would be typical), and events are fired by the TextInput if the programmer wishes to take further action.

     *
     * @param validator
     * The validator to use, or <tt>null</tt> to use no validator.
     */
    public void setValidator(Validator validator) {
        Validator previousValidator = this.validator;


        if (validator != previousValidator) {
            this.validator = validator;


            // Store previous text valid flag

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            if (textNode != null) {
                if (selectionLength == 0
                    && textNode.getCharacterCount() == textInput.getMaximumLength()) {
                    Toolkit.getDefaultToolkit().beep();
                } else {
                    Validator validator = textInput.getValidator();
                    boolean strictValidation = textInput.isStrictValidation();


                    if (validator != null
                        && strictValidation) {
                          String text = textInput.getText();
                          int selectionStart = textInput.getSelectionStart();


                          StringBuilder buf = new StringBuilder(text.substring(0, selectionStart));
                          buf.append(character);
                          buf.append(text.substring(selectionStart + selectionLength));


                        if (validator.isValid(buf.toString())) {
                            textInput.insert(character);
                        } else {
                            Toolkit.getDefaultToolkit().beep();
                        }
                    } else {

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            Keyboard.Modifier commandModifier = Platform.getCommandModifier();
            if (keyCode == Keyboard.KeyCode.DELETE
                || keyCode == Keyboard.KeyCode.BACKSPACE) {
                boolean backspace = (keyCode == Keyboard.KeyCode.DELETE ? false : true);


                Validator validator = textInput.getValidator();
                boolean strictValidation = textInput.isStrictValidation();


                if (validator != null
                    && strictValidation) {
                    StringBuilder buf = new StringBuilder(textNode.getText());
                    int index = textInput.getSelectionStart();
                    int count = textInput.getSelectionLength();


                    if (count > 0) {
                        buf.delete(index, index + count);
                    } else {
                        if (backspace) {
                            index--;
                        }


                        if (index >= 0
                            && index < textNode.getCharacterCount()) {
                            buf.deleteCharAt(index);
                        }
                    }


                    if (validator.isValid(buf.toString())) {
                        textInput.delete(backspace);
                    } else {
                        Toolkit.getDefaultToolkit().beep();
                    }
                } else {

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     *
     * @param validator
     * The validator to use, or <tt>null</tt> to use no validator.
     */
    public void setValidator(Validator validator) {
        Validator previousValidator = this.validator;


        if (validator != previousValidator) {
            this.validator = validator;
            textInputListeners.textValidatorChanged(this, previousValidator);
            validateText();

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        textinputDateRegex.setValidator(new RegexTextValidator(
            "(19|20)\\d\\d[- /.](0[1-9]|1[012])[-/.](0[1-9]|[12][0-9]|3[01])"));


        // creating a custom model that only accepts "true" or "false"
        textinputCustomBoolean.setText("true");
        textinputCustomBoolean.setValidator(new Validator() {
            @Override
            public boolean isValid(String s) {
                return "true".equals(s) || "false".equals(s);
            }
        });

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     *
     * @param validator
     * The validator to use, or <tt>null</tt> to use no validator.
     */
    public void setValidator(Validator validator) {
        Validator previousValidator = this.validator;


        if (validator != previousValidator) {
            this.validator = validator;


            // Store previous text valid flag

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    @Override
    public Vote previewInsertText(TextInput textInput, CharSequence text, int index) {
        Vote vote = Vote.APPROVE;


        if (textInput.isStrictValidation()) {
            Validator validator = textInput.getValidator();
            if (validator != null) {
                StringBuilder textBuilder = new StringBuilder();
                textBuilder.append(textInput.getText(0, index));
                textBuilder.append(text);
                textBuilder.append(textInput.getText(index, textInput.getCharacterCount()));


                if (!validator.isValid(textBuilder.toString())) {
                    vote = Vote.DENY;
                    Toolkit.getDefaultToolkit().beep();
                }
            }
        }

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    @Override
    public Vote previewRemoveText(TextInput textInput, int index, int count) {
        Vote vote = Vote.APPROVE;


        if (textInput.isStrictValidation()) {
            Validator validator = textInput.getValidator();
            if (validator != null) {
                StringBuilder textBuilder = new StringBuilder();
                textBuilder.append(textInput.getText(0, index));
                textBuilder.append(textInput.getText(index + count, textInput.getCharacterCount()));


                if (!validator.isValid(textBuilder.toString())) {
                    vote = Vote.DENY;
                    Toolkit.getDefaultToolkit().beep();
                }
            }
        }

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     *
     * @param validator
     * The validator to use, or <tt>null</tt> to use no validator.
     */
    public void setValidator(Validator validator) {
        Validator previousValidator = this.validator;


        if (validator != previousValidator) {
            this.validator = validator;
            textInputListeners.textValidatorChanged(this, previousValidator);
            validateText();

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        textinputDateRegex.setValidator(new RegexTextValidator(
            "(19|20)\\d\\d[- /.](0[1-9]|1[012])[-/.](0[1-9]|[12][0-9]|3[01])"));


        // creating a custom model that only accepts "true" or "false"
        textinputCustomBoolean.setText("true");
        textinputCustomBoolean.setValidator(new Validator() {
            @Override
            public boolean isValid(String s) {
                return "true".equals(s) || "false".equals(s);
            }
        });

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Related Classes of org.apache.pivot.wtk.validation.Validator

org.apache.pivot.tests.TextInputValidatorTest

org.apache.pivot.wtk.skin.terra.TerraTextInputSkin

org.apache.pivot.wtk.TextInput

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