com.norconex.jefmon.instance.action.impl.LogViewerActionPanel.java Source code

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Here is the source code for com.norconex.jefmon.instance.action.impl.LogViewerActionPanel.java

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/* Copyright 2007-2014 Norconex 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 com.norconex.jefmon.instance.action.impl;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.IChoiceRenderer;
import org.apache.wicket.model.Model;

import com.norconex.commons.wicket.bootstrap.form.BootstrapSelect;
import com.norconex.commons.wicket.markup.html.panel.CssPanel;

public class LogViewerActionPanel extends CssPanel {

    private static final long serialVersionUID = -7099355429414346698L;

    private final LinesReader linesReader;

    private final WebMarkupContainer logLinesWrapper;

    public LogViewerActionPanel(String id, LinesReader linesReader) {
        super(id);
        this.linesReader = linesReader;

        this.logLinesWrapper = new WebMarkupContainer("logLinesWrapper") {
            private static final long serialVersionUID = -8051862574434648486L;

            protected void onBeforeRender() {
                try {
                    addOrReplace(createLogLines());
                } catch (Exception e) {
                    e.printStackTrace(System.err);
                }
                super.onBeforeRender();
            };
        };
        this.logLinesWrapper.setOutputMarkupId(true);
        Form<Void> form = new Form<Void>("form");
        add(form);

        form.add(createReadDirectionDropDown());
        form.add(createLineQtyDropDown());
        form.add(createLineStyleDropDown());

        form.add(new AjaxButton("refresh") {
            private static final long serialVersionUID = 3578370723919187057L;

            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> theform) {
                refreshLines(target);
            }
        });
        add(logLinesWrapper);

    }

    private LinesReader getLinesReader() {
        return linesReader;
    }

    private DropDownChoice<String> createReadDirectionDropDown() {
        List<String> choices = Arrays.asList(LinesReader.MODE_TAIL, LinesReader.MODE_HEAD);
        final DropDownChoice<String> dd = new DropDownChoice<String>("readDirection",
                new Model<String>(LinesReader.MODE_TAIL), choices, new IChoiceRenderer<String>() {
                    private static final long serialVersionUID = 4651210594612011298L;

                    @Override
                    public Object getDisplayValue(String object) {
                        return getString("viewer.readDirection." + object);
                    }

                    @Override
                    public String getIdValue(String object, int index) {
                        return object;
                    }
                });
        // Add Ajax Behaviour...
        dd.add(new AjaxFormComponentUpdatingBehavior("onchange") {
            private static final long serialVersionUID = 4577648689377807050L;

            protected void onUpdate(AjaxRequestTarget target) {
                linesReader.setReadMode(dd.getInput());
                refreshLines(target);
            }
        });
        dd.add(new BootstrapSelect());
        return dd;
    }

    private DropDownChoice<String> createLineStyleDropDown() {
        List<String> choices = Arrays.asList(LinesReader.STYLE_FULL, LinesReader.STYLE_COMPACT);
        final DropDownChoice<String> dd = new DropDownChoice<String>("lineStyle",
                new Model<String>(LinesReader.STYLE_FULL), choices, new IChoiceRenderer<String>() {
                    private static final long serialVersionUID = 4651210594612011298L;

                    @Override
                    public Object getDisplayValue(String object) {
                        return getString("viewer.lineStyle." + object);
                    }

                    @Override
                    public String getIdValue(String object, int index) {
                        return object;
                    }
                });
        // Add Ajax Behaviour...
        dd.add(new AjaxFormComponentUpdatingBehavior("onchange") {
            private static final long serialVersionUID = 7626315421462420718L;

            protected void onUpdate(AjaxRequestTarget target) {
                linesReader.setLineStye(dd.getInput());
                refreshLines(target);
            }
        });
        dd.add(new BootstrapSelect());
        return dd;
    }

    private Component createLogLines() {
        String text;
        try {
            text = StringUtils.join(getLinesReader().readLines(), "\n");
        } catch (IOException e) {
            text = "Could not read log. Error is: " + e.getLocalizedMessage();
        }
        Label lines = new Label("logLines", text);
        return lines;
    }

    private DropDownChoice<Integer> createLineQtyDropDown() {
        final List<Integer> choices = Arrays.asList(10, 20, 50, 100);
        final DropDownChoice<Integer> lineQtyDDC = new DropDownChoice<Integer>("lineQty", new Model<Integer>(10),
                choices, new IChoiceRenderer<Integer>() {
                    private static final long serialVersionUID = 6925230811025968952L;

                    @Override
                    public Object getDisplayValue(Integer object) {
                        return object.toString();
                    }

                    @Override
                    public String getIdValue(Integer object, int index) {
                        return object.toString();
                    }
                });
        // Add Ajax Behaviour...
        lineQtyDDC.add(new AjaxFormComponentUpdatingBehavior("onchange") {
            private static final long serialVersionUID = 3867662005721342005L;

            protected void onUpdate(AjaxRequestTarget target) {
                linesReader.setLineQty(Integer.parseInt(lineQtyDDC.getInput()));
                refreshLines(target);
            }
        });
        lineQtyDDC.add(new BootstrapSelect());
        return lineQtyDDC;
    }

    private void refreshLines(AjaxRequestTarget target) {
        target.add(logLinesWrapper);
        target.appendJavaScript("resizeLogViewerLines();");
    }
}