TextAreaImpl.java example

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jo-widgets-master
/*
 * Copyright (c) 2010, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * DAMAGE.
 */

package org.jowidgets.impl.widgets.basic;

import org.jowidgets.api.controller.IDisposeListener;
import org.jowidgets.api.controller.IParentListener;
import org.jowidgets.api.toolkit.Toolkit;
import org.jowidgets.api.widgets.IContainer;
import org.jowidgets.api.widgets.IPopupMenu;
import org.jowidgets.api.widgets.ITextArea;
import org.jowidgets.api.widgets.descriptor.setup.ITextAreaSetup;
import org.jowidgets.common.types.Markup;
import org.jowidgets.common.widgets.controller.IInputListener;
import org.jowidgets.impl.base.delegate.ControlDelegate;
import org.jowidgets.impl.widgets.common.wrapper.AbstractControlSpiWrapper;
import org.jowidgets.spi.widgets.ITextAreaSpi;
import org.jowidgets.tools.controller.InputObservable;
import org.jowidgets.tools.validation.ValidationCache;
import org.jowidgets.tools.validation.ValidationCache.IValidationResultCreator;
import org.jowidgets.tools.widgets.invoker.ColorSettingsInvoker;
import org.jowidgets.tools.widgets.invoker.VisibiliySettingsInvoker;
import org.jowidgets.util.EmptyCheck;
import org.jowidgets.util.NullCompatibleEquivalence;
import org.jowidgets.validation.IValidationConditionListener;
import org.jowidgets.validation.IValidationResult;
import org.jowidgets.validation.IValidationResultBuilder;
import org.jowidgets.validation.IValidator;
import org.jowidgets.validation.ValidationResult;
import org.jowidgets.validation.tools.CompoundValidator;

public class TextAreaImpl extends AbstractControlSpiWrapper implements ITextArea {

    private final ControlDelegate controlDelegate;

    private final ValidationCache validationCache;
    private final CompoundValidator<String> compoundValidator;
    private final InputObservable inputObservable;

    private String lastUnmodiefiedText;

    private boolean editable;

    public TextAreaImpl(final ITextAreaSpi textAreaSpi, final ITextAreaSetup setup) {
        super(textAreaSpi);

        this.controlDelegate = new ControlDelegate(textAreaSpi, this);

        this.inputObservable = new InputObservable();

        this.compoundValidator = new CompoundValidator<String>();
        this.validationCache = new ValidationCache(new IValidationResultCreator() {
            @Override
            public IValidationResult createValidationResult() {
                final IValidationResultBuilder builder = ValidationResult.builder();
                builder.addResult(compoundValidator.validate(getValue()));
                return builder.build();
            }
        });

        if (setup.getText() != null) {
            setText(setup.getText());
        }

        if (setup.getMarkup() != null) {
            setMarkup(setup.getMarkup());
        }
        if (setup.getFontSize() != null) {
            setFontSize(Integer.valueOf(setup.getFontSize()));
        }
        if (setup.getFontName() != null) {
            setFontName(setup.getFontName());
        }

        this.editable = setup.isEditable();
        if (!setup.isEditable()) {
            setEditable(false);
        }

        VisibiliySettingsInvoker.setVisibility(setup, this);
        ColorSettingsInvoker.setColors(setup, this);

        textAreaSpi.addInputListener(new IInputListener() {
            @Override
            public void inputChanged() {
                inputObservable.fireInputChanged();
                validationCache.setDirty();
            }
        });

        lastUnmodiefiedText = textAreaSpi.getText();
    }

    @Override
    public ITextAreaSpi getWidget() {
        return (ITextAreaSpi) super.getWidget();
    }

    @Override
    public IContainer getParent() {
        return controlDelegate.getParent();
    }

    @Override
    public void setParent(final IContainer parent) {
        controlDelegate.setParent(parent);
    }

    @Override
    public void addParentListener(final IParentListener<IContainer> listener) {
        controlDelegate.addParentListener(listener);
    }

    @Override
    public void removeParentListener(final IParentListener<IContainer> listener) {
        controlDelegate.removeParentListener(listener);
    }

    @Override
    public boolean isReparentable() {
        return controlDelegate.isReparentable();
    }

    @Override
    public void addDisposeListener(final IDisposeListener listener) {
        controlDelegate.addDisposeListener(listener);
    }

    @Override
    public void removeDisposeListener(final IDisposeListener listener) {
        controlDelegate.removeDisposeListener(listener);
    }

    @Override
    public boolean isDisposed() {
        return controlDelegate.isDisposed();
    }

    @Override
    public void dispose() {
        controlDelegate.dispose();
    }

    @Override
    public IPopupMenu createPopupMenu() {
        return controlDelegate.createPopupMenu();
    }

    @Override
    public String getText() {
        return getWidget().getText();
    }

    @Override
    public void setText(final String text) {
        getWidget().setText(text);
    }

    @Override
    public void append(final String text) {
        getWidget().append(text);
    }

    @Override
    public void setFontSize(final int size) {
        getWidget().setFontSize(size);
    }

    @Override
    public void setFontName(final String fontName) {
        getWidget().setFontName(fontName);
    }

    @Override
    public void setMarkup(final Markup markup) {
        getWidget().setMarkup(markup);
    }

    @Override
    public void setSelection(final int start, final int end) {
        getWidget().setSelection(start, end);
    }

    @Override
    public void setCaretPosition(final int pos) {
        getWidget().setCaretPosition(pos);
    }

    @Override
    public int getCaretPosition() {
        return getWidget().getCaretPosition();
    }

    @Override
    public void selectAll() {
        final String text = getText();
        if (text != null) {
            setSelection(0, text.length());
        }
    }

    @Override
    public void select() {
        selectAll();
    }

    @Override
    public void scrollToCaretPosition() {
        getWidget().scrollToCaretPosition();
    }

    @Override
    public void scrollToEnd() {
        final String text = getText();
        if (!EmptyCheck.isEmpty(text)) {
            setCaretPosition(text.length() - 1);
            Toolkit.getUiThreadAccess().invokeLater(new Runnable() {
                @Override
                public void run() {
                    scrollToCaretPosition();
                }
            });
        }
    }

    @Override
    public void setEditable(final boolean editable) {
        this.editable = editable;
        getWidget().setEditable(editable);
    }

    @Override
    public boolean isEditable() {
        return editable;
    }

    @Override
    public void addInputListener(final IInputListener listener) {
        inputObservable.addInputListener(listener);
    }

    @Override
    public void removeInputListener(final IInputListener listener) {
        inputObservable.removeInputListener(listener);
    }

    @Override
    public void addValidator(final IValidator<String> validator) {
        compoundValidator.addValidator(validator);
    }

    @Override
    public boolean hasModifications() {
        return !NullCompatibleEquivalence.equals(lastUnmodiefiedText, getWidget().getText());
    }

    @Override
    public void resetModificationState() {
        lastUnmodiefiedText = getWidget().getText();
    }

    @Override
    public void setValue(final String value) {
        getWidget().setText(value);
    }

    @Override
    public String getValue() {
        return getWidget().getText();
    }

    @Override
    public IValidationResult validate() {
        return validationCache.validate();
    }

    @Override
    public void addValidationConditionListener(final IValidationConditionListener listener) {
        validationCache.addValidationConditionListener(listener);
    }

    @Override
    public void removeValidationConditionListener(final IValidationConditionListener listener) {
        validationCache.removeValidationConditionListener(listener);
    }

}