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Known bugs in Sidebar RTM
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Jon Abbott
post Dec 20 2006, 10:22 AM
Post #1


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Posts: 772
Joined: 6-July 06
Member No.: 4,576
I'm running: Vista Ultimate 64-bit SP2
Here's all the reproducible bugs in Sidebar RTM. If you have any more or know workarounds, let me know and I'll add them.

Bug #1: The bottom and right are incorrectly cropped when rotation is applied to <g:background>
Attached File  Repro1.jpg ( 11.52K ) Number of downloads: 69

Attached File  Repro1.gadget ( 11.48K ) Number of downloads: 51


Bug #2: <g:background> and addImageObject incorrectly place the image, by (originalImageWidth-scaledImageWidth)/2, (originalImageHeight-scaledImageHeight)/2
Attached File  Repro2.jpg ( 9.48K ) Number of downloads: 42

Attached File  Repro2.gadget ( 11.5K ) Number of downloads: 36

Workaround: Read the image dimensions and alter the coordinates accordingly:

CODE
function addImage(file, x, y, width, height) {
    //get the original image dimensions
    var img = new Image();
    img.src = "file://" + file;

    //calculate half the difference
    var xOffset = parseInt((img.width - width)/2);
    var yOffset = parseInt((img.height - height)/2);

    img = null;

    //add the image
    var gimg = <gbackground>.addImageObject(file, x - xOffset, y - yOffset);
    gimg.width = width;
    gimg.height = height;

    return gimg;
}

NOTE: The 1st time it reads the image dimensions, they're sometimes 0,0 so you may want to add a check for this and try to read it again.



Bug #3: A g:background image will become corrupt if it is sized than 50% of it's original size.
Attached File  Repro3.jpg ( 4.53K ) Number of downloads: 38

Attached File  Repro3.gadget ( 11.47K ) Number of downloads: 26

Workaround (by Rafael): Manually calculate the size in pixels.


Bug #4: Gadgets will not install if they contain blank directories in the Gadget package.
Workaround: Put a dummy file in the directory.



Bug #5: Changing <g:text>.value doesn't update <g:text>.width or <g:text>.height - the text is stretched, or you get an invalid result when trying to reference it.
Attached File  Repro5.jpg ( 4.46K ) Number of downloads: 29

Attached File  Repro5.gadget ( 11.65K ) Number of downloads: 18


Workaround (by Tom@Cener): After changing the value, set to width/height to 0. The width/height will then be set to the correct values by Sidebar:

CODE
bodyText = bodyBackground.addTextObject("This is some text", "Arial", 20, "Black", 0, 0);
bodyText.value = "Text";
bodyText.width = 0;
bodyText.height = 0;



Bug #6: Settings page is limited to 300x400. The Settings page on this gadget should be 1000x1000
Attached File  Repro6.gadget ( 11.68K ) Number of downloads: 27


Bug #7: Sidebar crashes when trying to use addImageObject or addTextObject in the BODY section.
Attached File  Repro7.gadget ( 11.72K ) Number of downloads: 30


Workaround (by Rafael): Move any code that references objects created in the BODY section into a function and use "onload":

CODE
<html>
  <head>
     <script language="javascript">
      function init() {
         bodyBackground.addImageObject("image.jpg", 50, 50);
      }
    </script>
  </head>
  <body onload="init()">
    <g:background id="bodyBackground" src="background.png" />
  </body>
</html>



Bug #8: The aliased surround of a g:image is incorrectly placed if the object is rotated and body margin is not 0.
Attached File  Repro8.jpg ( 10.75K ) Number of downloads: 27

Attached File  Repro8.gadget ( 11.8K ) Number of downloads: 17

Workaround: Add "margin:0px" to the BODY style.



Bug #9: The three (or two if you have no settings) icons that appear when you hover over a Gadget are incorrectly placed for detached Gadgets after Sidebar is reloaded. They're shifted left 6 pixels. Docked Gadgets are also placed incorrectly, shifted right 6 pixels.
To reproduce this:

1. Add the Calendar Gadget
2. Detach it from the Sidebar
3. Exit Sidebar
4. Load Sidebar
5. Hover the mouse over the Calender Gadget

You'll see the icons are in the wrong place. To correct them drag the Gadget slightly.



Bug #10: If you manually Exit Sidebar, the X position of all detached Gadgets is decreased by 6.
To reproduce this:

1. Add a Gadget to the Desktop
2. Open %USERPROFILE%\AppData\Local\Microsoft\Windows Sidebar\Settings.ini
3. Find the Gadget you've added and note it's "PrivateSetting_GadgetDropLocationX" value
4. Exit Sidebar
5. Open %USERPROFILE%\AppData\Local\Microsoft\Windows Sidebar\Settings.ini
6. "PrivateSetting_GadgetDropLocationX" has now decreased by 6

Workaround: If the Gadget has moved 6 pixels when it's unloaded, correct it.
CODE
window.onunload = fixBug10;

var privateSetting_X = parseInt(System.Gadget.Settings.readString("PrivateSetting_GadgetDropLocationX"));

function fixBug10() {
    var currentX = parseInt(System.Gadget.Settings.readString("PrivateSetting_GadgetDropLocationX"));

    // has the Gadget moved left 6 pixels since it was loaded?
    if (currentX == privateSetting_X - 6)
        System.Gadget.Settings.writeString("PrivateSetting_GadgetDropLocationX", privateSetting_X);
}


Bug #11: System.* namespace goes missing after "window.location.reload(true);"
Attached File  Repro11.gadget ( 743bytes ) Number of downloads: 26

Workaround (by hax): Use location.href to refresh the page instead
CODE
location.href = location.href;



Bug #12: Focus is lost on the Flyout if you change System.Gadget.Flyout.file whilst a Flyout is open

Workaround: You need to pause for at least 300ms and then set the focus back. Add the following code to the very end of the Flyout html:
CODE
<script language="javascript" type="text/javascript">
    setTimeout(getFocus, 300);

    function getFocus() {self.focus()}
</script>


Bug #13: Setting "System.Gadget.Flyout.onShow = null;" generates an error. This goes for all other Gadget settings that are set to a function.

Workaround: Set it to a blank function:
CODE
System.Gadget.Flyout.onShow = blankFunction;
...
function blankFunction() {}


Bug #14: Partially transparent surround is scaled incorrectly when setting System.Gadget.background, if the image is larger than the Gadget
Attached File  Repro14.jpg ( 2.26K ) Number of downloads: 32

Attached File  Repro14.gadget ( 39.63K ) Number of downloads: 24

Workaround: Set the background with <g:background> ie:
CODE
<g:background src="undockedright.png">
instead of:
System.Gadget.background = "undockedright.png";



Bug #15: Background image doesn't change if it's changed through a stylesheet

Workaround: Set the background with System.Gadget.background or <g:background>

Attached File  Repro15.gadget ( 5.93K ) Number of downloads: 22


Issue #16: addImageObject holds the image open. If you're developing a Gadget and want to change one of the images, you can't overwrite it.

Workaround: Exit Sidebar, update your image and then reload



Issue #17: Images are cached. If you remove all instances of a Gadget, change the images within it and then re-add it to Sidebar, the old images still show.

Workaround: Exit Sidebar and the reload to clear the image cache



Bug #18: If a Gadget is partially off screen, Sidebar shifts it so it's completely on screen on loading.
To reproduce this:

1. Add a Gadget to the Desktop
2. Move the Gadget so it's partially offscreen
3. Exit Sidebar
4. Load Sidebar
5. The Gadget has now shifted position to be completely on screen.



Bug #19: <g:background>.blur / <g:background>.softEdge effect is positioned incorrectly. It doesn't take account of the top and left parameters.
Attached File  Repro19.jpg ( 3.75K ) Number of downloads: 19

Attached File  Repro19.gadget ( 11.68K ) Number of downloads: 16


Bug #20: When digitally signing a Gadget, if the filename is long the signature is corrupt:
Attached File  bug20.JPG ( 13.8K ) Number of downloads: 14


Workaround (by Bruce Williams @ MS): Rename your gadget package from SomeLongGadgetName.gadget to SomethingShorter.gadget


Bug #21: The GPO Policy setting ""Turn Off User Installed Windows Sidebar Gadgets"", also stops users from adding Gadgets in the "Shared Gagets" folder:
Workaround (by Brian Teutsch @ MS): Don't use the GPO Policy Setting, instead point the User Gadget Folder environment variable "GADGETS_USER" to "%PROGRAMFILES%\Windows Sidebar\Shared Gadgets"


Bug #22: <BODY onunload> doesn't fire during logout and shutdown.
Workaround: If you're just saving settings, periodically save them with a timer.


Bug #23: BODY background colour cannot be set from a stylesheet.
Workaround: Create a DIV section that fills the flyout and set the background colour on that.
Attached File  repro23.gadget ( 1.21K ) Number of downloads: 12


Bug #24: Gadget may never appear on the sidebar if you have overlayed RGB transparent images and are updating the screen too often.
Attached File  Repro24.jpg ( 12.49K ) Number of downloads: 11

Attached File  Repro24.gadget ( 3.17K ) Number of downloads: 10

Workaround: Before setting up the update timer, pause for half a second:
CODE
var iTimerID1;
...
window.setTimeout(setupTimer,500)
...
function setupTimer() {
    //setup the screen update timer
    iTimerID1 = window.setInterval(<updateScreenFunction>, <refreshRate>);
}


Issue #25: Flyout will only show if Sidebar has focus. If you show the Flyout via "System.Gadget.Flyout.show = true" and Sidebar doesn't have focus, the "System.Gadget.Flyout.onHide" event immediately fires.
In this example Gadget, the Flyout should open 500ms after it closes.
Attached File  repro25.gadget ( 1.05K ) Number of downloads: 23


If you're opening the Flyout outside of a key or mouse click event, you must trap for this occuring:
CODE
System.Gadget.Flyout.onHide = onHideEvent;

function onHideEvent() {
    if (System.Gadget.Flyout.document.parentWindow.body == null)
        return;

    // Flyout was showing
}


Bug #26: System.Shell.saveFileDialog(strPath, strFilter) filter string doesn't work as expected. The documentation states filters should be seperated with a ":", eg "Text File:*.txt:Reg File:*.reg::", which doesn't work.
Note: This issue is now noted in the August 2007 documentation refresh.

Workaround (by miloush): Use char0 as a seperator instead. eg "Text File\0*.txt\0Reg File\0*.reg\0\0"


Bug #27: System.Gadget.begin/endTransition can cause corruption of a g:background. It happens regardless of what transition type you use, or if you use an image or not. In the following Repro, Left click to see the problem. Right click to see, with the workaround.

Attached File  Repro27.jpg ( 2.29K ) Number of downloads: 29

Attached File  Repro27.gadget ( 972bytes ) Number of downloads: 14

Workaround: Wait the transition time+300ms, then set the g:background src to itself:
CODE
var transitionDelay = 2;

function init(fix) {
    System.Gadget.beginTransition();

    document.body.style.width = <bodyWidth>;
    document.body.style.height = <bodyHeight>;

    System.Gadget.endTransition(System.Gadget.TransitionType.morph, transitionDelay);

    window.setTimeout(fixgBackground, transitionDelay*1000 + 300);
}

function fixgBackground() {
    gBackground.src = gBackground.src;
}



Bug #28: g:background becomes corrupt if you change document.body.style.zoom. In the following Repro, Left click to see the problem. Right click to turn on the workaround.

Attached File  Repro28.jpg ( 2.21K ) Number of downloads: 17

Attached File  Repro28.gadget ( 5.7K ) Number of downloads: 10

Partial Workaround: Use System.Gadget.background instead of <g:background>. You obviously lose the ability to insert images into the background via addImageObject.
Partial Workaround 2: Set <g:background> to a blank image, add your background image via addImageObject and set the g:image object's opacity below 100. This does however result in image corruption if document.body.style.zoom is less than 1 when the Gadget is added to Sidebar. It also suffers from Bug#32


Bug #29: If the g:background image is set to a percentage of the Gadget size, it's not rescaled when the Gadget body size changes. In the following Repro, Left click to see the problem. Right click to turn on the workaround.

Attached File  Repro29.jpg ( 4.12K ) Number of downloads: 17

Attached File  Repro29.gadget ( 5.68K ) Number of downloads: 18

Workaround: Once you've changed the body size, set the g:background src to itself. eg:
CODE
document.body.style.width = 400;
document.body.style.height = 200;
gBackground.src = gBackground.src;
...
<body>
    <g:background id="gBackground" src="screenshot.png" style="width:100%; height:100%;" />
</body>




Bug #30: begin/endTransition can hang a Gadget, if the body size isn't changed. In the following Repro, the image should toggle between two images. Right click to toggle with the workaround, Left click to recreate the problem.

Attached File  Repro30.gadget ( 9.02K ) Number of downloads: 12

Workaround: Change the Body size before calling endTransition. Then set it back 300ms after the transition has finished. eg:
CODE
var transitionDelay = 2;
var bodyWidth;

function updateGadget() {
    System.Gadget.beginTransition();

    //update gadget

    //temporarily change the gadget size
    bodyWidth = document.body.style.width;
    document.body.style.width = parseInt(bodyWidth) + 1;

    //end the Transition and set the body size back after it's completed
    System.Gadget.endTransition(System.Gadget.TransitionType.morph, transitionDelay);
    window.setTimeout(fixTransition, transitionDelay*1000 + 300);
}

function fixTransition() {
    document.body.style.width = bodyWidth;
}



Bug #31: System.Gadget.background="..." will corrupt the image if it's height is less than 57 pixels. If you set a Gadget background via System.Gadget.Background = "..." to an image that is less than 57 pixels in height that has partially transparent pixels, the background becomes corrupt. Sidebar stretches the transparent pixels to 57 pixels in height, but leaves the opaque pixels their original size.

Attached File  Repro31.jpg ( 1.7K ) Number of downloads: 13

Attached File  Repro31.gadget ( 4.82K ) Number of downloads: 10

Workaround: Use <g:background src="..." /> instead.



Bug #32: g:background "blur" and "softEdge" cause the partially transparent background pixels to overlay the Gadget when focus is lost. In the Repro, move the Gadget to reproduce the problem.

Attached File  Repro32_1.jpg ( 4.34K ) Number of downloads: 19
becomes Attached File  Repro32_2.jpg ( 4.42K ) Number of downloads: 20

Attached File  Repro32.gadget ( 11.84K ) Number of downloads: 22



Bug #33: Sidebar will crash if the Gadget tries to show a Flyout during the onunload event.
Attached File  Repro33.gadget ( 723bytes ) Number of downloads: 20




Issue #34: Fonts change scale when the desktop DPI is changed.
Workaround: Specify all font sizes in px, and add a default font size to all HTML pages:
CODE
<STYLE>
    * {font-size:12px}
</STYLE>




Bug #35: BODY width/height cannot be set through a stylesheet
Workaround: Set it at the time you change the stylesheet:
Method 1:
1. Create a dummy element in your Gadget html file
CODE
<DIV id="divBodySize" class="bodySize" style="display:none"></DIV>

2. In the stylesheets, instead of setting width/height on body {}, set it on .bodySize {}:
CODE
.bodySize{
    width:163px;
    height:149px;
}

3. When you change the stylesheet, set the body size:
CODE
document.body.style.width = parseInt(divBodySize.currentStyle["width"]);
document.body.style.height = parseInt(divBodySize.currentStyle["height"]);


Method 2 (by rokujou):
Leave the width/height in the body rule and use the following code to set the width/height when the stylesheet is changed:
CODE
var bodyStyle = findBodyRule();
if (bodyStyle != null)
{
  document.body.style.width = bodyStyle.style.width;
  document.body.style.height = bodyStyle.style.height;
}

...

function findBodyRule() {
  for (var sheet = 0; sheet < document.styleSheets.length; sheet++)
  {
    for (var rule = 0; rule < document.styleSheets(sheet).rules.length; rule++)
    {
      if (document.styleSheets(sheet).rules(rule).selectorText == "body")
         return document.styleSheets(sheet).rules(rule);
    }    
  }
  return null;
}




Bug #36 (variation on Bug#30): begin/endTransition will stop mouse event from firing if the Gadget size isn't changed. In the following Repro, clicking the mouse should display a message. As soon as the first begin/endTransition has occured, mouse events stop firing.

Workaround: Use the same workaround as Bug#30

Attached File  Repro36.gadget ( 936bytes ) Number of downloads: 4




Bug #37: System.Shell.Item.isFile generates an error. In the following Repro, a left click should list if the files and folders in the Gadget are a file or not. Right click to use the workaround.
Note: This functionality has been removed in the August 2007 documentation refresh.

Workaround: If isLink and isFolder are both false, isFile must be true:
CODE
var oFolder = System.Shell.itemFromPath(<path>);
var oItems = oFolder.SHFolder.Items;

for(var i = 0; i<oItems.count; i++)
{
    if (!(oItems.item(i).isFolder || oItems.item(i).isLink))
        // Must be a file
    else
        // Folder or Link
}


Attached File  Repro37.gadget ( 1.7K ) Number of downloads: 3




Issue #38: System.Sound.playSound does not always play the sound. Repro to follow.


Issue #39: Magenta (#FF00FF) in images (JPG, PNG or GIF) becomes transparent. The Repro should display "Transparent" in Magenta, left click to toggle the filter workaround.
Workaround: Either modify #FF00FF in the image to #FF00FE, or display the image twice with a filter applied to convert #FF00FF to #FF00FE:

CODE
<img src="<image url>" style="position:absolute; top:0px; left:0px;" />
<img src="<image url>" style="position:absolute; top:0px; left:0px; filter:progid:DXImageTransform.Microsoft.Chroma(Color=#ff00ff) Mask(Color=#ff00fe);" />

Attached File  Repro39.gadget ( 1.71K ) Number of downloads: 22




Bug #40 (variation of Bug#32): Overlaying an image with transparency onto a g:background that has Opacity set, will cause the g:background to overlay the image when the Gadget loses focus. ie When the Gadget is docked/undocked, visibility changes, or changes position on the Sidebar.
In the following Repro, dock/undock the Gadget to see the problem.

Attached File  Repro40.gadget ( 7.05K ) Number of downloads: 19


Workaround (Jon Abbott/Antoine Cloutier): Set the window focus when the screen position changes or any of the following events fire:

System.Gadget.visibilityChanged
System.Gadget.onDock
System.Gadget.onUndock

eg.
CODE
System.Gadget.visibilityChanged = fixFocus;
System.Gadget.onDock = fixFocus;
System.Gadget.onUndock = fixFocus;

// check if the screen position has changed
window.setInterval(checkBug40, 300);

var scrX, scrY;
function checkBug40() {
    if (window.screenTop != scrY || window.screenLeft != scrX) {
        scrX = window.screenLeft;
        scrY = window.screenTop;
        fixFocus2();
    }
}

function fixFocus() { window.setTimeout(fixFocus2, 300) }
function fixFocus2() { window.focus() }




Bug #41: g:image.softEdge is not consistent as the images rotation is changed. The soft edge appears to double in size as the image approaches 45, 135, 225 and 315 degrees. In the following Repro, which rotates a white square, the soft edge should look the same regardless of it's rotation.

Attached File  Repro41.gadget ( 1.24K ) Number of downloads: 9




Bug #42: Mouse events do not fire on pixels that are partially transparent. In the following Repro, left click to fire a mouse event. Right click to apply opacity to the background image, which will cause mouse events to stop firing.

Attached File  Repro42.gadget ( 1.08K ) Number of downloads: 6




Bug #43: Sidebar does not apply document.body.style.zoom to the Gadget thumbnail image shown on the Settings page. In the following Repro, open the settings page to see the Gadget appear to double in size in the thumbnail (zoom is set to "0.5").

Attached File  Repro43.gadget ( 2.66K ) Number of downloads: 2




Bug #44: g:background becomes corrupt when it's changed, when hosting a WPF application. In the Repro Gadget, after adding it to Sidebar, dock/undock it to see what should happen. Then click the background to add the WPF application. Dock/undock will now corrupt the background.
Workaround: Use System.Gadget.background = "..." instead

Attached File  Repro44_shouldbe.png ( 22.26K ) Number of downloads: 5
becomes Attached File  Repro44_becomes.png ( 23.31K ) Number of downloads: 4


Attached File  Repro44.gadget ( 14.93K ) Number of downloads: 7




Bug #45: g:background.move, g:image.move and g:text.move methods do not exist.
Note: This functionality has been removed in the August 2007 documentation refresh.

Workaround: Manually move the objects by changing their top/left parameters.

g:background:
CODE
<g:object>.style.top += y;
<g:object>.style.left += x;

g:text / g:image:
CODE
<g:object>.top += y;
<g:object>.left += x;



Bug #46: g:image.addImageObject, g:image.addTextObject, g:image.removeObjects methods do not exist.
Note: This functionality has been removed in the August 2007 documentation refresh.

Workaround: Add the objects to a g:background instead.



(Fixed) Issue #47: System.Gadget.Shell.chooseFile documentation is incorrect.
Note: This issue has been fixed in the August 2007 documentation refresh.

oShellItem = System.Shell.chooseFile( [bForOpen], strFilter [, strInitialDirectory] [, strFileInit])

should read:

oShellItem = System.Shell.chooseFile( bForOpen, strFilter, strInitialDirectory, strFileInit )



Issue #48: Undocked Gadgets on the primary display will move after running a full screen DirectX application (ie games), if they are positioned beyond the applications new resolution.
Workaround: Quit Sidebar before loading the application.



Bug #49: Setting a Gadget's background image via CSS "background-image", can cause the image to lose it's transparency.
Workaround: Set the image via System.Gadget.background or <g:background>.



Issue #50: Resizing a gBackground does not automatically resize any gImage or gText objects it contains.
Workaround: You must manually adjust the top, left, width, height and fontsize properties to reflect the change in size of the background image. Be aware that resizing a gImage object will cause bug#2.

eg. Resize a g:text object
CODE
//Syntax: fixText(<g:text object>, <x pos>, <y pos>, <fontsize>, <new Gadget width>, <new Gadget height>, <original Gadget width>, <original Gadget height>)

function fixText(obj, x,y, fs, w,h, ow,oh) {
    if (w != ow) {
        obj.fontsize = fs * (w/ow);
        obj.left = Math.round(x * (w/ow));
        obj.top = Math.round(y * (h/oh));
    } else {
        obj.fontsize = fs;
        obj.left = x;
        obj.top = y;
    }
}


eg. Resize a g:image object
CODE
//Syntax: fixImage(<g:image object>, <x pos>, <y pos>, <image width>, <image height>, <new Gadget width>, <new Gadget height>, <original Gadget width>, <original Gadget height>)

function fixImage(obj, x,y, iw, ih, w,h, ow,oh) {
    // *********
    // Workaround bug#2 - http://www.aeroxp.org/board/index.php?showtopic=7318
    if (w != ow)
        obj.left = Math.round(x - ((ow - w)/2));
    else
        obj.left = x;
    
    if (h != oh)
        obj.top = Math.round(y - ((oh - h)/2));
    else
        obj.top = y;
    // *********

    obj.width = iw * (w/ow);
    obj.height = ih * (h/oh);
}




Bug #51: g:text fonts smaller than 18pt are not anti-aliased.
Workaround: If possible, switch to VML or HTML text. VML will give you the ability to rotate the text.

eg. VML text:

CODE
<HTML xmlns:v>
<HEAD>
<STYLE>
    v\:*{behavior:url(#default#vml);position:absolute}
</STYLE>
<script language="javascript" type="text/javascript">
    function rotateVMLText(id, rotation) {
        var xn = 1000 * Math.cos(rotation / 180 * Math.PI)
        var yn = 1000 * Math.sin(rotation / 180 * Math.PI);
    
        id.v = "m 0,0 l "+parseInt(xn)+","+parseInt(yn);
    }
</SCRIPT>
</HEAD>
<BODY onload="rotateVMLText(bodyTextVML, -10)" style="width:200px; height:200px;">
    <v:shape id="bodyTextShape" style="position:absolute; top:100px; left:100px; width:100%; height:100%; antialias:true;" coordsize="0,0">
            <v:path id="bodyTextVML" textpathok="True" />
            <v:fill on="True" color="#ff0000"/>
            <v:stroke on="false" />
            <v:textpath on="True"
                text-align="center"
                font = "normal normal normal 16 'Times New Roman'"
                string = "My Text Value Here" />
    </v:shape>
</BODY>
</HTML>


Attached File  Repro51.png ( 11.84K ) Number of downloads: 8


Attached File  Repro51.gadget ( 1K ) Number of downloads: 10




Bug #52: Gadgets that play streamed media may become untrusted. Symptoms include the inability to access variables from the Flyout/Settings and Gadget and "Permission Denied" errors when accessing local content.
Partial workaround: Mark all your HTML as being in the local domain with a Mark of the Web, by placing the following code at the top of your HTML files:
CODE
<!-- saved from url=(0014)about:local -->

NOTE: The MOTW must be invalid for this workaround to work.



Issue #53: Setting a DOCTYPE can cause a Gadget to scroll within its window when a scroll event occurs, if the document body margin style is not set to 0. Events such as middle mouse button scrolling (horizonal or vertical) can cause the issue.
Workaround: Either set margin to 0, or unless you specifically need to set the DOCTYPE for strict adherance etc. remove it.
CODE
<STYLE>
  body { margin:0px }
</STYLE>

Attached File  Repro53_shouldbe.png ( 1.07K ) Number of downloads: 3
becomes Attached File  Repro53_becomes.png ( 860bytes ) Number of downloads: 1


Attached File  Repro53.gadget ( 1.38K ) Number of downloads: 5
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Rafael
post Dec 20 2006, 02:41 PM
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QUOTE (Jon Abbott @ Dec 20 2006, 05:22 AM) *
Bug# 7: Crash Sidebar everytime
Attached File  Repro7.gadget ( 11.72K ) Number of downloads: 30


Sidebar tries to read the data pointed to by a null pointer and crashes. This is because you're trying to access the g:background before the HTML document has fully loaded. I moved the javascript into a function called upon onload and it works fine.

CODE
<html>
<head>
<script language="javascript">
function manipulate() { bodyBackground.addImageObject("image.jpg", 50, 50); }
</script>
</head>


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Rafael
post Dec 20 2006, 03:08 PM
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QUOTE (Jon Abbott @ Dec 20 2006, 05:22 AM) *
Bug# 3: Image exploded beyond belief


Looks like Sidebar cannot resize the image smaller than 50% of it's original size (when using percentages). Sounds like a math error in Sidebar. Workaround: Calculate image size manually and use that value.


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Jon Abbott
post Dec 20 2006, 04:05 PM
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QUOTE (Rafael @ Dec 20 2006, 03:08 PM) *
Looks like Sidebar cannot resize the image smaller than 50% of it's original size (when using percentages). Sounds like a math error in Sidebar. Workaround: Calculate image size manually and use that value.

Cheers, I've added both workarounds and given you credit for them.
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Thomas Pleasance
post Dec 22 2006, 04:35 PM
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We are doing well this week wink.gif
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jimmyjames
post Jan 8 2007, 04:47 AM
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The Bug# 12 was bugging me for a while. (pun intended)

Thanks for the info.
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hax
post Jan 24 2007, 02:22 AM
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QUOTE (Jon Abbott @ Dec 20 2006, 06:22 PM) *
Bug# 11: System.* namespace goes missing after "window.location.reload(true);"


workaround:
CODE
location.href = location.href;
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Jon Abbott
post Jan 24 2007, 07:32 PM
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QUOTE (hax @ Jan 24 2007, 02:22 AM) *
Bug# 11:
workaround: location.href = location.href;

Thanks for the workaround, I've added it.
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rokujou
post Jun 18 2007, 03:50 PM
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Jonathan, I posted this on MSDN forums but you may have missed it. A much simpler workaround to bug #35 is to ensure the body css is set at the top of the stylesheet and use document.styleSheets to parse it, like so:

CODE
document.body.style.width = document.styleSheets[0].rules[0].style.width;
document.body.style.height = document.styleSheets[0].rules[0].style.height;


This saves the need for a dummy div to be created. A loop could also be created to find the body css anywhere in the stylesheet.

Cheers,

Andy


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Jon Abbott
post Jun 18 2007, 07:24 PM
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QUOTE (rokujou @ Jun 18 2007, 04:50 PM) *
Jonathan, I posted this on MSDN forums but you may have missed it. A much simpler workaround to bug #35 is to ensure the body css is set at the top of the stylesheet and use document.styleSheets to parse it, like so:

This saves the need for a dummy div to be created. A loop could also be created to find the body css anywhere in the stylesheet.

Cheers,

Andy

I did see it and initially thought "neat solution", but then I thought about the code you'd need to find the body rule and thought, "perhaps not" ohmy.gif

eg
CODE
bodyStyle = findBodyRule();
if (bodyStyle != null)
{
  document.body.style.width = bodyStyle.style.width;
  document.body.style.height = bodyStyle.style.height;
}

...

function findBodyRule() {
  for (var sheet = 0; sheet < document.styleSheets.length; sheet++)
  {
    for (var rule = 0; rule < document.styleSheets(sheet).rules.length; rule++)
    {
      if (document.styleSheets(sheet).rules(rule).selectorText == "body") return document.styleSheets(sheet).rules(rule);
    }    
  }
  return null;
}
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rokujou
post Jun 18 2007, 09:34 PM
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Yeah, it is a bit of a nightmare. Although technically, you wouldn't have to search for the stylesheet. If you were dynamically switching the stylesheet, you'd already have the stylesheet object referring to the stylesheet you just switched. That's also why I just make sure the body rule is the first CSS rule defined, but I guess that's not really the best workaround!

Andy


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Jon Abbott
post Jun 19 2007, 08:52 AM
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QUOTE (rokujou @ Jun 18 2007, 10:34 PM) *
Yeah, it is a bit of a nightmare. Although technically, you wouldn't have to search for the stylesheet. If you were dynamically switching the stylesheet, you'd already have the stylesheet object referring to the stylesheet you just switched. That's also why I just make sure the body rule is the first CSS rule defined, but I guess that's not really the best workaround!

I added that loop, in case there were cascaded stylesheets. It's fairly neat, although I haven't tested it to see if it actually works!

I've added it above, giving you credit for it.
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nexus
post Jun 19 2007, 09:08 PM
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Its a shame Bruce doesnt come around anymore, or his team could sure benefit from taking a look at this.


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Jon Abbott
post Aug 9 2007, 10:40 AM
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Added two new issues/bugs I've find whilst coding FlipCalendar, taking the count to 51.
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Bryant
post Aug 10 2007, 10:46 PM
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Bruce is no longer with the sidebar.


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