I'm currently utilizing polymer's paper-dialog element in my application. While the dialog is always centered by default, I am looking to establish a minimum distance between the dialog and the right side of the window. This way, as the window resizes, the paper-dialog will maintain a set distance from the right side without getting too close. Is there a CSS solution for achieving this requirement, or should I consider alternative techniques?
To define a specific distance between the dialog and the right side, you can modify the 'right' property of your paper-dialog element with a fixed position as shown below:
html /deep/ .dialog-right-position {
position: fixed;
top: 10px;
right: 10px;
}
Make sure to apply the same CSS class name to your element.
<paper-dialog heading="Custom Dialog Positioning" class="dialog-right-position">
<p>This is a right positioned paper dialog!</p>
</paper-dialog>
If you require a demonstration, see the example provided below:
<!doctype html>
<html>
<head>
<title>paper-dialog-alignment</title>
<script src="webcomponentsjs/webcomponents.js"></script>
<link href="paper-button/paper-button.html" rel="import">
<link href="paper-dialog/paper-dialog.html" rel="import">
<style shim-shadowdom>
html /deep/ .dialog-right-position {
position: fixed;
top: 10px;
right: 10px;
}
html /deep/ .dialog-right-position::shadow #scroller {
width: 500px;
height: 350px;
}
</style>
</head>
<body unresolved>
<template is="auto-binding">
<section on-tap="{{toggleRightDialog}}">
<button>
Display dialog
</button>
<paper-dialog heading="Custom Dialog Positioning" class="dialog-right-position">
<p>This is a right positioned paper dialog!</p>
</paper-dialog>
</section>
</template>
<script>
var scope = document.querySelector('template[is=auto-binding]');
scope.toggleRightDialog = function(e) {
if (e.target.localName == 'button') {
var d = e.target.nextElementSibling;
if (d) {
d.toggle();
}
}
};
</script>
</body>
</html>
After some troubleshooting, I successfully adjusted the position of the dialog to prevent it from getting too close to the right side of the window. This involved calculating the size of the window, the width of the dialog, and ensuring a minimum amount of space is left between the dialog and any element on the right side of the window to avoid overlapping. If there is sufficient space available, the dialog is centered; otherwise, it is positioned to the right. Feel free to review the code below, which was inspired by jérémy Darchy:
<!doctype html>
<html>
<head>
<title>paper-dialog-alignment </title>
<script src="webcomponentsjs/webcomponents.js"></script>
<link href="paper-button/paper-button.html" rel="import">
<link href="paper-dialog/paper-dialog.html" rel="import">
<style shim-shadowdom>
html /deep/ .dialog-right-position::shadow #scroller {
width: 500px;
height: 350px;
}
html /deep/ #blueDiv {
float: right;
background: blue;
width: 200px;
height: 100vh;
}
</style>
</head>
<body unresolved>
<template is="auto-binding">
<section on-tap="{{toggleDialog}}">
<button>
Toggle dialog
</button>
<paper-dialog id="dialog" heading="Custom Dialog Positioning" class="dialog-right-position">
<p>not overlaping the blue element, centered when possible </p>
</paper-dialog>
<div id="blueDiv"></div>
</section>
</template>
<script>
var scope = document.querySelector('template[is=auto-binding]');
window.onresize = function(event) {
var dialog = document.querySelector("html /deep/ #dialog");
scope.repositionPaperDialog(dialog);
};
scope.toggleDialog = function(e) {
this.$.dialog.toggle();
};
// fired event from the core-overlay element, when the dialog opens
this.addEventListener("core-overlay-position", function(e) {
scope.repositionPaperDialog(e.detail.target);
});
scope.repositionPaperDialog = function(dialog) {
if ((document.body.clientWidth/2) < (dialog.offsetWidth/2 + this.$.blueDiv.offsetWidth)) {
// dialog overlaps the blue element, set the right position of the dialog
dialog.dimensions.position.h = 1;
dialog.style.right = "200px";
dialog.style.left = "";
} else {
// center dialog
dialog.style.left = "";
dialog.style.right = "";
dialog.dimensions.position.h = 0;
}
};
</script>
</body>
</html>
A simpler approach to achieve the same result is by defining all sides (top, bottom, left, right) in the CSS for paper-dialogs. I set them all to 25% in my example, resulting in a dialog that is evenly positioned on the screen. This method proved to be effective in solving the issue at hand.
paper-dialog {
position: fixed;
top: 25%;
left: 25%;
bottom: 25%;
right: 25%;
margin: 0px;
}
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