Example usage for com.google.gwt.core.client JsDate getTimezoneOffset

Introduction

In this page you can find the example usage for com.google.gwt.core.client JsDate getTimezoneOffset.

Prototype

public final native int getTimezoneOffset() ;

Source Link

Document

Returns the difference, in minutes, between the local and UTC representations of this date.

Usage

From source file:java.util.Date.java

License:Apache License

/**
 * Detects if the requested time falls into a non-existent time range due to
 * local time advancing into daylight savings time. If so, push the requested
 * time forward out of the non-existent range.
 *//*  w  ww.  j a v a  2 s .c om*/
private void fixDaylightSavings(int hours) {
    if ((jsdate.getHours() % 24) != (hours % 24)) {
        JsDate copy = JsDate.create(jsdate.getTime());
        copy.setDate(copy.getDate() + 1);
        int timeDiff = jsdate.getTimezoneOffset() - copy.getTimezoneOffset();

        // If the time zone offset is changing, advance the hours and
        // minutes from the initially requested time by the change amount
        if (timeDiff > 0) {
            int timeDiffHours = timeDiff / 60;
            int timeDiffMinutes = timeDiff % 60;
            int day = jsdate.getDate();
            int badHours = jsdate.getHours();
            if (badHours + timeDiffHours >= 24) {
                day++;
            }
            JsDate newTime = JsDate.create(jsdate.getFullYear(), jsdate.getMonth(), day, hours + timeDiffHours,
                    jsdate.getMinutes() + timeDiffMinutes, jsdate.getSeconds(), jsdate.getMilliseconds());
            jsdate.setTime(newTime.getTime());
        }
    }
}

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