com.sencha.gxt.core.rebind.useragent.UserAgentPropertyGenerator.java Source code

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Here is the source code for com.sencha.gxt.core.rebind.useragent.UserAgentPropertyGenerator.java

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/**
 * Sencha GXT 4.0.0 - Sencha for GWT
 * Copyright (c) 2006-2015, Sencha Inc.
 *
 * licensing@sencha.com
 * http://www.sencha.com/products/gxt/license/
 *
 * ================================================================================
 * Open Source License
 * ================================================================================
 * This version of Sencha GXT is licensed under the terms of the Open Source GPL v3
 * license. You may use this license only if you are prepared to distribute and
 * share the source code of your application under the GPL v3 license:
 * http://www.gnu.org/licenses/gpl.html
 *
 * If you are NOT prepared to distribute and share the source code of your
 * application under the GPL v3 license, other commercial and oem licenses
 * are available for an alternate download of Sencha GXT.
 *
 * Please see the Sencha GXT Licensing page at:
 * http://www.sencha.com/products/gxt/license/
 *
 * For clarification or additional options, please contact:
 * licensing@sencha.com
 * ================================================================================
 *
 *
 * ================================================================================
 * Disclaimer
 * ================================================================================
 * THIS SOFTWARE IS DISTRIBUTED "AS-IS" WITHOUT ANY WARRANTIES, CONDITIONS AND
 * REPRESENTATIONS WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
 * IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, MERCHANTABLE QUALITY,
 * FITNESS FOR A PARTICULAR PURPOSE, DURABILITY, NON-INFRINGEMENT, PERFORMANCE AND
 * THOSE ARISING BY STATUTE OR FROM CUSTOM OR USAGE OF TRADE OR COURSE OF DEALING.
 * ================================================================================
 */
package com.sencha.gxt.core.rebind.useragent;

import java.util.SortedSet;

import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.linker.ConfigurationProperty;
import com.google.gwt.core.ext.linker.PropertyProviderGenerator;
import com.google.gwt.user.rebind.SourceWriter;
import com.google.gwt.user.rebind.StringSourceWriter;

public class UserAgentPropertyGenerator implements PropertyProviderGenerator {
    @Override
    public String generate(TreeLogger logger, SortedSet<String> possibleValues, String fallback,
            SortedSet<ConfigurationProperty> configProperties) throws UnableToCompleteException {

        SourceWriter sw = new StringSourceWriter();
        sw.println("{");

        sw.println("var ua = navigator.userAgent.toLowerCase();");

        // Microsoft Edge
        uaContains(sw, "edge/", "edge");

        uaContains(sw, "chrome", "chrome");

        sw.println("if (ua.indexOf('trident') != -1 || ua.indexOf('msie') != -1) {");
        sw.indent();

        // TODO ChromeFrame?
        docModeGreaterThan(sw, 11, "ie11");
        docModeGreaterThan(sw, 10, "ie10");
        docModeGreaterThan(sw, 9, "ie9");
        docModeGreaterThan(sw, 8, "ie8");

        // last assume newest
        sw.println("return 'ie10';");
        sw.outdent();
        sw.println("}");

        sw.println("if (ua.indexOf('safari') != -1) {");
        sw.indent();
        uaContains(sw, "version/3", "safari3");
        uaContains(sw, "version/4", "safari4");
        // else assume newest
        // simpleStatement(sw, "version/5", "safari5");
        sw.println("return 'safari5';");
        sw.outdent();
        sw.println("}");

        sw.println("if (ua.indexOf('gecko') != -1) {");
        sw.indent();
        uaContains(sw, "rv:1.8", "gecko1_8");
        // Don't check for rev 1.9, check instead for the newest version, and treat
        // all
        // gecko browsers that don't match a rule as the newest version
        // simpleStatement(sw, "rv:1.9", "gecko1_9");
        sw.println("return 'gecko1_9';");
        sw.outdent();
        sw.println("}");

        uaContains(sw, "adobeair", "air");

        sw.println("return null;}");
        return sw.toString();
    }

    private void docModeGreaterThan(SourceWriter sw, int i, String value) {
        sw.println("if ($doc.documentMode >= %1$d) return '%2$s'", i, value);
    }

    private void uaContains(SourceWriter sw, String ua, String value) {
        sw.println("if (ua.indexOf('%1$s') != -1) return '%2$s';", ua, value);
    }
}