org.gk.ui.client.com.form.gkFileUploadField.java Source code

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Here is the source code for org.gk.ui.client.com.form.gkFileUploadField.java

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/*
 * Copyright (C) 2000-2012  InfoChamp System Corporation
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.gk.ui.client.com.form;

import java.util.List;
import java.util.Map;

import jfreecode.gwt.event.client.bus.EventBus;
import jfreecode.gwt.event.client.bus.EventObject;
import jfreecode.gwt.event.client.bus.EventProcess;

import org.gk.ui.client.com.i18n.Msg;
import org.gk.ui.client.com.panel.gkFileUploadPanel;
import org.gk.ui.client.com.utils.StringUtils;
import org.gk.ui.client.icon.Icons;

import com.extjs.gxt.ui.client.Style.VerticalAlignment;
import com.extjs.gxt.ui.client.event.BaseEvent;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.ComponentEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.Listener;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.extjs.gxt.ui.client.widget.HorizontalPanel;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.extjs.gxt.ui.client.widget.form.AdapterField;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Anchor;

public class gkFileUploadField extends AdapterField {

    protected HorizontalPanel hp;
    protected HorizontalPanel linkPanel;
    protected Button uploadButton;
    protected String beanName = "";

    public gkFileUploadField() {
        super(null);
        init();
        widget = hp;
    }

    public gkFileUploadField(String id) {
        super(null);
        setId(id);
        init();
        widget = hp;
    }

    public gkFileUploadField(String id, String label) {
        this(id);
        setFieldLabel(label);
    }

    private void init() {
        hp = new HorizontalPanel();
        linkPanel = new HorizontalPanel();
        linkPanel.setVerticalAlign(VerticalAlignment.MIDDLE);

        uploadButton = new Button();
        uploadButton.setIconStyle("icsc-create");

        uploadButton.addSelectionListener(new SelectionListener<ButtonEvent>() {
            @Override
            public void componentSelected(ButtonEvent ce) {
                gkFileUploadPanel filePanel = new gkFileUploadPanel(gkFileUploadField.this);
                filePanel.show();
            }
        });

        hp.add(uploadButton);
        hp.add(linkPanel);
    }

    private void initFileUploadBean() {
        String gkData = getData(StringUtils.DATA);
        if (gkData == null || gkData.equals("")) {
            beanName = "handler";
        } else {
            String[] bean = gkData.split(":");
            if (bean.length > 1) {
                if (bean[0].equalsIgnoreCase("bean")) {
                    beanName = bean[1];
                }
            }
        }
    }

    @Override
    public void setValue(Object value) {
        super.setValue(value);
        initFileUploadBean();
        if (isRendered()) {
            loadFileList();
        }
    }

    public void loadFileList() {
        EventBus.get().publishRemote(new EventObject(beanName + gkFileUploadPanel.Event.GET_FILE_LIST, value + ""),
                new EventProcess() {
                    @Override
                    public void execute(String eventId, EventObject eo) {
                        if (eo.getInfoType().equals("list")) {
                            refreshLinkPanel(eo.getInfoList());
                        }
                    }
                });
    }

    private void refreshLinkPanel(List links) {

        linkPanel.removeAll();

        if (isReadOnly() || !isEnabled()) {
            uploadButton.disable();
        }

        for (int i = 0; i < links.size(); i++) {
            Map map = (Map) links.get(i);
            String fileName = (String) map.get("name");
            String filePath = (String) map.get("path");
            final String id;
            if (filePath != null) {
                id = filePath + fileName;
            } else {
                id = fileName;
            }

            gkImageField image = new gkImageField(Icons.get.cross().getSafeUri().asString());

            if (!isReadOnly() && isEnabled()) {
                image.addListener(Events.OnClick, new Listener<BaseEvent>() {

                    @Override
                    public void handleEvent(BaseEvent be) {
                        if (Window.confirm(Msg.get.areuSure() + Msg.get.delete() + "?")) {
                            EventBus.get().publishRemote(
                                    new EventObject(beanName + gkFileUploadPanel.Event.DELETE, id),
                                    new EventProcess() {

                                        @Override
                                        public void execute(String eventId, EventObject eo) {
                                            loadFileList();
                                        }
                                    });
                        }
                    }
                });
            } else {
                image = new gkImageField(Icons.get.text().getSafeUri().asString()) {
                    @Override
                    protected void onMouseOver(ComponentEvent ce) {
                        //
                    }
                };
            }

            Anchor anchor = new Anchor(fileName);
            if (isEnabled()) {
                anchor.setHref("event/put/def/" + beanName + gkFileUploadPanel.Event.DOWNLOAD + ".go?id=" + id);
                anchor.setTarget("_blank");
            }
            linkPanel.add(image);
            linkPanel.add(anchor);
        }
        hp.layout();
    }

    public String getBeanName() {
        return beanName;
    }

    public void setBeanName(String beanName) {
        this.beanName = beanName;
    }

    @Override
    public void setReadOnly(boolean readOnly) {
        super.readOnly = readOnly;
        reloadFileList();
    }

    @Override
    public void setEnabled(boolean enabled) {
        super.setEnabled(enabled);
        reloadFileList();
    }

    private void reloadFileList() {
        uploadButton.enable();
        if (isRendered()) {
            loadFileList();
        }
    }

}