fr.putnami.pwt.core.widget.client.Image.java Source code

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Here is the source code for fr.putnami.pwt.core.widget.client.Image.java

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/**
 * This file is part of pwt.
 *
 * pwt is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * pwt is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with pwt. If not,
 * see <http://www.gnu.org/licenses/>.
 */
package fr.putnami.pwt.core.widget.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.ImageElement;
import com.google.gwt.dom.client.Style;
import com.google.gwt.editor.client.LeafValueEditor;
import com.google.gwt.user.client.ui.IsWidget;

import fr.putnami.pwt.core.editor.client.EditorOutput;
import fr.putnami.pwt.core.editor.client.helper.TakesValueEditorWrapper;
import fr.putnami.pwt.core.theme.client.CssStyle;
import fr.putnami.pwt.core.widget.client.base.AbstractWidget;
import fr.putnami.pwt.core.widget.client.util.StyleUtils;

public class Image extends AbstractWidget implements EditorOutput<String> {

    private static final String PROP_MAX_WIDTH = "maxWidth";
    private static final String PROP_MAX_HEIGHT = "maxHeight";
    private static final String PROP_WIDTH = "width";
    private static final String PROP_HEIGHT = "height";

    public enum Type implements CssStyle {
        DEFAULT(null), ROUNDED("img-rounded"), CIRCLE("img-circle"), THUMBNAIL("img-thumbnail");

        private final String style;

        Type(String style) {
            this.style = style;
        }

        @Override
        public String get() {
            return this.style;
        }
    }

    private final ImageElement imgElement;

    private boolean keepPropertions = true;

    private Type type;
    private String src;
    private String alt;

    private int widthPx = -1;
    private int heightPx = -1;

    public Image() {
        super(ImageElement.TAG);
        this.imgElement = ImageElement.as(this.getElement());
    }

    protected Image(Image source) {
        super(source);
        this.imgElement = ImageElement.as(this.getElement());

        this.setSrc(source.src);
        this.setAlt(source.alt);
        this.widthPx = source.widthPx;
        this.heightPx = source.heightPx;
        this.keepPropertions = source.keepPropertions;

        this.resetSize();
    }

    @Override
    public IsWidget cloneWidget() {
        return new Image(this);
    }

    public String getSrc() {
        return this.src;
    }

    public void setSrc(String src) {
        this.src = src;
        if (this.src != null) {
            if (this.src.startsWith("/")) {
                this.src = GWT.getModuleName() + this.src;
            }
            this.imgElement.setSrc(this.src);
        }
    }

    public String getAlt() {
        return this.alt;
    }

    public void setAlt(String alt) {
        this.alt = alt;
        this.imgElement.setAlt(alt);
    }

    @Override
    public String getValue() {
        return this.src;
    }

    @Override
    public void edit(String value) {
        this.setSrc(value);
    }

    @Override
    public LeafValueEditor<String> asEditor() {
        return new TakesValueEditorWrapper<String>(this);
    }

    public Type getType() {
        return this.type;
    }

    public void setType(Type type) {
        this.type = type;
        StyleUtils.addStyle(this, type);
    }

    public boolean isKeepPropertions() {
        return this.keepPropertions;
    }

    public void setKeepPropertions(boolean keepPropertions) {
        this.keepPropertions = keepPropertions;
        this.resetSize();
    }

    public Integer getWidthPx() {
        return this.widthPx;
    }

    public void setWidthPx(Integer widthPx) {
        this.widthPx = widthPx;
        this.resetSize();
    }

    public Integer getHeightPx() {
        return this.heightPx;
    }

    public void setHeightPx(Integer heightPx) {
        this.heightPx = heightPx;
        this.resetSize();
    }

    private void resetSize() {
        Style imgStyle = this.imgElement.getStyle();
        imgStyle.clearProperty(Image.PROP_WIDTH);
        imgStyle.clearProperty(Image.PROP_HEIGHT);
        imgStyle.clearProperty(Image.PROP_MAX_WIDTH);
        imgStyle.clearProperty(Image.PROP_MAX_HEIGHT);

        if (this.widthPx > 0) {
            imgStyle.setPropertyPx(this.keepPropertions ? Image.PROP_MAX_WIDTH : Image.PROP_WIDTH, this.widthPx);
        }
        if (this.heightPx > 0) {
            imgStyle.setPropertyPx(this.keepPropertions ? Image.PROP_MAX_HEIGHT : Image.PROP_HEIGHT, this.heightPx);
        }
    }

}