Package org.drools.guvnor.client.ruleeditor.workitem

Source Code of org.drools.guvnor.client.ruleeditor.workitem.WorkitemDefinitionEditor

/*
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.guvnor.client.ruleeditor.workitem;

import org.drools.guvnor.client.common.DirtyableComposite;
import org.drools.guvnor.client.explorer.ClientFactory;
import org.drools.guvnor.client.rpc.RuleAsset;
import org.drools.guvnor.client.rpc.RuleContentText;
import org.drools.guvnor.client.ruleeditor.EditorWidget;
import org.drools.guvnor.client.ruleeditor.RuleViewer;
import org.drools.guvnor.client.ruleeditor.SaveEventListener;

import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.TextArea;

/**
* WorkItem definitions Editor
*/
public class WorkitemDefinitionEditor extends DirtyableComposite implements
        EditorWidget, SaveEventListener {

    private TextArea text;
    final private RuleContentText data;
    final private RuleAsset asset;

    public WorkitemDefinitionEditor(RuleAsset a,
                                    RuleViewer v,
                        ClientFactory clientFactory) {
        this(a);
    }

    public WorkitemDefinitionEditor(RuleAsset a) {
        this(a, -1);
    }

    public WorkitemDefinitionEditor(RuleAsset a, int visibleLines) {
        asset = a;
        data = (RuleContentText) asset.getContent();
        if (data.content == null) {
            data.content = "Empty!";
        }

        Grid layout = new Grid(1, 2);

        WorkitemDefinitionElementsBrowser browser = new WorkitemDefinitionElementsBrowser(
                new WorkitemDefinitionElementSelectedListener() {

                    public void onElementSelected(String elementName,
                            String pasteValue) {
                        insertText(pasteValue, true);
                    }
                });

        layout.setWidget(0, 0, browser);
        text = new TextArea();
        text.setWidth("100%");
        text.setVisibleLines((visibleLines == -1) ? 25 : visibleLines);
        text.setText(data.content);
        text.getElement().setAttribute("spellcheck", "false"); // NON-NLS

        text.setStyleName("default-text-Area"); // NON-NLS

        text.addChangeHandler(new ChangeHandler() {
            public void onChange(ChangeEvent event) {
                data.content = text.getText();
                makeDirty();
            }
        });

        text.addKeyDownHandler(new KeyDownHandler() {

            public void onKeyDown(KeyDownEvent event) {
                if (event.getNativeKeyCode() == KeyCodes.KEY_TAB) {
                    event.preventDefault();
                    event.stopPropagation();
                    int pos = text.getCursorPos();
                    insertText("\t", false);
                    text.setCursorPos(pos + 1);
                    text.cancelKey();
                    text.setFocus(true);
                }
            }
        });

        layout.setWidget(0, 1, text);

        layout.getColumnFormatter().setWidth(0, "10%");
        layout.getColumnFormatter().setWidth(1, "90%");
        layout.getCellFormatter().setAlignment(0, 0,
                HasHorizontalAlignment.ALIGN_LEFT,
                HasVerticalAlignment.ALIGN_TOP);
        layout.getCellFormatter().setAlignment(0, 1,
                HasHorizontalAlignment.ALIGN_LEFT,
                HasVerticalAlignment.ALIGN_TOP);
        layout.setWidth("95%");

        initWidget(layout);
    }

    void insertText(String ins, boolean isSpecialPaste) {

        text.setFocus(true);

        int i = text.getCursorPos();
        String left = text.getText().substring(0, i);
        String right = text.getText().substring(i, text.getText().length());
        int cursorPosition = left.toCharArray().length;
        if (isSpecialPaste) {
            int p = ins.indexOf("|");
            if (p > -1) {
                cursorPosition += p;
                ins = ins.replaceAll("\\|", "");
            }

        }

        text.setText(left + ins + right);
        this.data.content = text.getText();

        text.setCursorPos(cursorPosition);
    }

    public void onSave() {
        // TODO Auto-generated method stub

    }

    public void onAfterSave() {
        // TODO Auto-generated method stub

    }

}
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