Code/Birthdays.js

/*
 
File: Birthdays.js
 
Abstract: Basic display code and plug-in interfacing for Birthdays
    example widget.
 
Version: 1.2
 
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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*/
 
var scrollbar, scrollArea;
 
var DAY_ERR = "No birthdays today.";
var WEEK_ERR = "No more birthdays this week.";
var MONTH_ERR = "No more birthdays this month.";
var PLUGIN_ERR = "Birthdays plug-in could not be found";
 
function loaded() {
    
    // Create buttons
    CreateButton("today", "Today", "leftEnd", showTodaysBirthdays);
    CreateButton("thisWeek", "Week", "mid", showThisWeeksBirthdays);
    CreateButton("thisMonth", "Month", "rightEnd", showThisMonthsBirthdays);
    
    // Create scroll area
    scrollbar = new AppleVerticalScrollbar(document.getElementById("myScrollBar"));
    scrollArea = new AppleScrollArea(document.getElementById("parentDiv"), scrollbar);
    scrollArea.scrollsHorizontally = false;
    scrollArea.singlepressScrollPixels = 10;
    scrollArea.focus(); // for key control when first loading in Safari
    
    if (window.widget) {
        widget.onshow = onshow;
    }
    
    window.onfocus = function () { scrollArea.focus(); }
    window.onblur = function () { scrollArea.blur(); }
 
    showTodaysBirthdays();
}
 
var lastDay = new Date().getDate();
 
function onShow() {
    
}
 
var oldControl;
 
// Switches between the content DIVs.
function showContent(newContent) {
    
    document.getElementById("errorDiv").style.display = "none";
    
    clearResults();
    
    if (newContent) {
        parentDiv.appendChild(newContent);
    }
    
    // Resize, reposition the scrollthumb
    scrollArea.reveal(newContent);
    scrollArea.refresh();
}
 
function clearResults() {
    var parentDiv = document.getElementById("parentDiv");
    if (parentDiv.firstChild) {
        parentDiv.removeChild(parentDiv.firstChild);
    }
 
}
var lastControl = null;
// Easy hack on AppleButton to add state between the three
function updateControl(newControl) {
    if (lastControl) {
        lastControl.object._setPressed(false);
    }
    newControl.object._setPressed(true);
    lastControl = newControl;
}
 
/* 
 * Plug-In interface functions
 *
 * The birthdays{Today | ThisWeek | ThisMonth} functions
 * return a 2D array of people in Address Book with upcoming
 * birthdays.  Each entry of the array represents a person and
 * is itself an array of three items:
 *  -- First and Last name [0]
 *  -- Birthday in m/y format [1]
 *  -- Address Book GUID [2]
 */
function showTodaysBirthdays() {
    clearResults();
    updateControl(document.getElementById("today"));
    if (window.BirthdaysPlugIn) {
        var bdays = BirthdaysPlugIn.birthdaysToday();
        if (!bdays || bdays.length==0) {
            showError(DAY_ERR);
        } else {
            showContent(buildResultsTable(bdays));
        }
    } else {
        showError(PLUGIN_ERR);
    }
}
 
function showThisWeeksBirthdays(event) {
    clearResults();
    updateControl(document.getElementById("thisWeek"));
    if (window.BirthdaysPlugIn) {
        var bdays = BirthdaysPlugIn.birthdaysThisWeek();
        if (!bdays || bdays.length==0) {
            showError(WEEK_ERR);
        } else {
            showContent(buildResultsTable(bdays));
        }
    } else {
        showError(PLUGIN_ERR);
    }
}
 
function showThisMonthsBirthdays(event) {
    clearResults();
    updateControl(document.getElementById("thisMonth"));
    if (window.BirthdaysPlugIn) {
        var bdays = BirthdaysPlugIn.birthdaysThisMonth();
        if (!bdays || bdays.length==0) {
            showError(MONTH_ERR);
        } else {
            showContent(buildResultsTable(bdays));
        }
    } else {
        showError(PLUGIN_ERR);
    }
}
 
function showError(error) {
    var errorDiv = document.getElementById("errorDiv");
    if (errorDiv.firstChild) {
        errorDiv.removeChild(errorDiv.firstChild);
    }
    errorDiv.appendChild(document.createTextNode(error));
    errorDiv.style.display = "block";
}
 
function hideError() {
    document.getElementById("errorDiv").style.display = "block";
}
 
/*
 * buildResultsTable takes arrays returned from the plug-in and 
 * organizes them in a table for display in our widget
 */
function buildResultsTable(resultsArray) {      
    var resultsTable = document.createElement("div");
    resultsTable.setAttribute("class", "mainContent");
 
    for (var i=0; i<resultsArray.length; i++) {
        var info = resultsArray[i];
        var rowDiv = document.createElement("div");
        rowDiv.setAttribute("class", "resultsRow row" + (i % 2));
        var link = document.createElement("a");
        link.setAttribute("href", "javascript:widget.openURL('addressbook://" + info[3] + "')");
        var firstName = info[0];
        var lastName = info[1];
        if (firstName.length==0 && lastName.length==0) {
            firstName = "[No";
            lastName = "Name]";
        }
        link.appendChild(document.createTextNode(firstName + " " + lastName + " (" + info[2] + ")"));
        rowDiv.appendChild(link);
        resultsTable.appendChild(rowDiv);
    }
    
    return resultsTable;
}