org.guvnor.client.editors.GeneralTextEditorScreenView.java Source code

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Here is the source code for org.guvnor.client.editors.GeneralTextEditorScreenView.java

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/*
 * Copyright 2014 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.guvnor.client.editors;

import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.ui.Composite;
import org.uberfire.ext.widgets.common.client.ace.AceEditor;
import org.uberfire.ext.widgets.common.client.ace.AceEditorCallback;
import org.uberfire.ext.widgets.common.client.ace.AceEditorMode;
import org.uberfire.ext.widgets.common.client.ace.AceEditorTheme;

/**
 * A Text editor
 */
@Dependent
public class GeneralTextEditorScreenView extends Composite implements GeneralTextEditorScreenPresenter.View {

    private AceEditor editor = new AceEditor();
    private boolean isDirty = false;
    private GeneralTextEditorScreenPresenter presenter;

    @PostConstruct
    public void setup() {
        initWidget(editor);

        final Style s = getElement().getStyle();
        s.setPosition(Style.Position.ABSOLUTE);
        s.setOverflow(Style.Overflow.HIDDEN);
        s.setTop(0.0, Style.Unit.PX);
        s.setLeft(0.0, Style.Unit.PX);
        s.setWidth(100.0, Style.Unit.PCT);
        s.setHeight(100.0, Style.Unit.PCT);

        editor.startEditor();
        editor.setTheme(AceEditorTheme.CLOUD9_NIGHT);
    }

    @Override
    public void init(GeneralTextEditorScreenPresenter presenter) {
        this.presenter = presenter;
    }

    @Override
    public void onAttach() {
        super.onAttach();
        final Style s = editor.getElement().getParentElement().getStyle();
        s.setPosition(Style.Position.ABSOLUTE);
        s.setOverflow(Style.Overflow.HIDDEN);
        s.setTop(0.0, Style.Unit.PX);
        s.setLeft(0.0, Style.Unit.PX);
        s.setWidth(100.0, Style.Unit.PCT);
        s.setHeight(100.0, Style.Unit.PCT);
    }

    public void setContent(final AceEditorMode mode, final String content) {
        if (mode != null) {
            editor.setMode(mode);
        }

        editor.setText(content);

        isDirty = false;
        editor.addOnChangeHandler(new AceEditorCallback() {
            @Override
            public void invokeAceCallback(JavaScriptObject obj) {
                if (!isDirty) {
                    isDirty = true;
                    if (presenter != null) {
                        presenter.fireChangeEvent();
                    }
                }
            }
        });
    }

    public void appendContent(final AceEditorMode mode, final String content) {
        if (mode != null) {
            editor.setMode(mode);
        }

        editor.setText(editor.getText() + content);

        isDirty = false;
        editor.addOnChangeHandler(new AceEditorCallback() {
            @Override
            public void invokeAceCallback(JavaScriptObject obj) {
                if (!isDirty) {
                    isDirty = true;
                    presenter.fireChangeEvent();
                }
            }
        });
    }

    public String getContent() {
        return editor.getText();
    }

    @Override
    public void setFocus() {
        editor.setFocus();
    }

    @Override
    public boolean isDirty() {
        return isDirty;
    }

    @Override
    public void makeReadOnly() {
        editor.setReadOnly(true);
    }

    @Override
    public void setDirty(boolean dirty) {
        isDirty = dirty;
    }

    public void setContentAndScroll(final String content) {
        editor.setText(content);
        editor.scrollToLine(editor.getText().split("\n").length);
    }

    public void appendContentAndScroll(final String content) {
        editor.setText(editor.getText() + content);
        editor.scrollToLine(editor.getText().split("\n").length);
    }

    public void setWrapMode(boolean wrap) {
        editor.setUseWrapMode(wrap);
    }

    public void setReadOnly(boolean readOnly) {
        editor.setReadOnly(readOnly);
    }

}