com.google.dart.tools.ui.internal.dartc.metrics.MetricsView.java Source code

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Here is the source code for com.google.dart.tools.ui.internal.dartc.metrics.MetricsView.java

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/*
 * Copyright (c) 2011, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
 * 
 * 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.google.dart.tools.ui.internal.dartc.metrics;

import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.part.ViewPart;

/**
 * MetricsView displays the build metrics for the DartCompiler
 */
public class MetricsView extends ViewPart implements ControlListener {

    /**
     * The view that contains the list of compilations units to query
     */
    public ListViewer listViewer;

    /**
     * The view that contains the Table of compiler metrics
     */
    public TableViewer tableViewer;

    /**
     * The manager that handles and organizes all the compilation units and their metrics
     */
    private final MetricsManager manager;

    /**
     * Column that contains the names of the given compiler metrics
     */
    private TableColumn col;

    /**
     * Column that contains the values of all the measured compiler metrics
     */
    private TableColumn col2;

    /**
     * Sash that allows the views to be resized
     */
    private SashForm sashForm;

    /**
     * Parent of the view
     */
    private Composite parent;

    public MetricsView() {
        super();
        this.manager = new MetricsManager();
        manager.setView(this);
    }

    @Override
    public void controlMoved(ControlEvent e) {
        //do nothing
    }

    /**
     * On resize, checks to see if it is Wider than it is Tall if so, it changes the layout to
     * Vertical.
     */
    @Override
    public void controlResized(ControlEvent e) {
        int orientation;
        if (parent.getSize().y > parent.getSize().x) {
            orientation = SWT.VERTICAL;
        } else {
            orientation = SWT.HORIZONTAL;
        }
        sashForm.setOrientation(orientation);
    }

    /**
     * Creates the view
     */
    @Override
    public void createPartControl(Composite parent) {
        this.parent = parent;
        int orientation;
        if (parent.getSize().y > parent.getSize().x) {
            orientation = SWT.VERTICAL;
        } else {
            orientation = SWT.HORIZONTAL;
        }
        sashForm = new SashForm(parent, orientation);

        listViewer = new ListViewer(sashForm, SWT.V_SCROLL);
        listViewer.add(manager.getDartLibraries());
        listViewer.getList().setSelection(0);
        listViewer.addSelectionChangedListener(manager);

        tableViewer = new TableViewer(sashForm, SWT.SINGLE);
        Table table = tableViewer.getTable();
        MetricsTableLabelProvider labelProvider = new MetricsTableLabelProvider();
        labelProvider.setManager(manager);
        tableViewer.setLabelProvider(labelProvider);
        table.setHeaderVisible(true);
        table.setLinesVisible(true);

        col = new TableColumn(table, SWT.LEFT);
        col.setWidth(200);
        col.setText("No Compilation Unit Selected");
        col.setResizable(true);

        col2 = new TableColumn(table, SWT.LEFT);
        col2.setWidth(150);
        col2.setResizable(true);

        tableViewer.add(manager.metricTitles);
        sashForm.setWeights(new int[] { 2, 3 });
        parent.addControlListener(this);
    }

    @Override
    public void dispose() {
        super.dispose();
        manager.dispose();
    }

    @Override
    public void setFocus() {
    }

    /**
     * Sets the Titles of the two columns.
     * 
     * @param currentSelection-Titles the left Column {@link #col} whatever the selected element in
     *          the {@link #listViewer} is named
     * @param time-Sets the title of the right Column {@link #col2} the amount of time since the given
     *          compilation unit was last compiled
     */
    public void setSelectedElement(String currentSelection, Long time) {
        col.setText(currentSelection);
        if (time != null) {
            float elapsedTime = System.currentTimeMillis() - time;
            int days = (int) Math.floor(elapsedTime / (24 * 60 * 60 * 1000));
            elapsedTime = elapsedTime - (days * (24 * 60 * 60 * 1000));
            int hours = (int) Math.floor(elapsedTime / (60 * 60 * 1000));
            elapsedTime = elapsedTime - (hours * (60 * 60 * 1000));
            int minutes = (int) Math.floor(elapsedTime / (60 * 1000));
            elapsedTime = elapsedTime - (minutes * (60 * 1000));
            int seconds = (int) Math.floor(elapsedTime / 1000);
            String day = "";
            String hour = "";
            String minute = "";
            String second = "";
            if (days > 0) {
                day = days + "d ";
            }
            if (!day.equals("") || hours > 0) {
                hour = hours + "h ";
            }
            if (!hour.equals("") || minutes > 0) {
                minute = minutes + "m ";
            }
            second = seconds + "s ago";
            col2.setText(day + hour + minute + second);
        } else {
            col2.setText("No recent build to measure");
        }
    }

}