org.cloudcoder.app.client.view.BestScoreBarCell.java Source code

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Here is the source code for org.cloudcoder.app.client.view.BestScoreBarCell.java

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// CloudCoder - a web-based pedagogical programming environment
// Copyright (C) 2011-2014, Jaime Spacco <jspacco@knox.edu>
// Copyright (C) 2011-2014, David H. Hovemeyer <david.hovemeyer@gmail.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package org.cloudcoder.app.client.view;

import org.cloudcoder.app.shared.model.IHasSubmissionReceipt;
import org.cloudcoder.app.shared.model.Problem;
import org.cloudcoder.app.shared.model.SubmissionReceipt;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;

/**
 * Cell displaying a bar representation of a student's best submission
 * for a particular {@link Problem}.
 * 
 * @author David Hovemeyer
 */
public class BestScoreBarCell<E extends IHasSubmissionReceipt> extends AbstractCell<E> {
    @Override
    public void render(com.google.gwt.cell.client.Cell.Context context, E value, SafeHtmlBuilder sb) {
        if (value == null) {
            // Data not available, or student did not attempt this problem
            appendNoInfoBar(sb);
            return;
        }

        // If we don't know the total number of test cases, don't display anything
        SubmissionReceipt receipt = value.getReceipt();
        if (receipt == null || receipt.getNumTestsAttempted() == 0) {
            appendNoInfoBar(sb);
            return;
        }

        int numTests = receipt.getNumTestsAttempted();
        int numPassed = receipt.getNumTestsPassed();

        StringBuilder buf = new StringBuilder();
        buf.append("<div class=\"cc-barOuter\"><div class=\"cc-barInner\" style=\"width: ");
        int pct = (numPassed * 10000) / (numTests * 100);
        buf.append(pct);
        buf.append("%\"></div></div>");

        String s = buf.toString();

        sb.append(SafeHtmlUtils.fromSafeConstant(s));
    }

    private void appendNoInfoBar(SafeHtmlBuilder sb) {
        sb.append(SafeHtmlUtils.fromSafeConstant("<div class=\"cc-barNoInfo\"></div>"));
    }
}