I have a Polymer template which creates a list of paper-items. I'd like to decorate some of those with additional CSS classes. What I've done so far is use conditional templates and for each variant, which I find quite ugly ( see below ).
<template is="dom-bind">
<iron-ajax url="https://example.com/data.json" last-response="{{data}}" auto></iron-ajax>
<div role="listbox">
<template is="dom-repeat" items="[[data.talks]]" as="talk">
<paper-item>
<paper-item-body two-line>
<template is="dom-if" if="[[shouldHighlight(talk)]]">
<div class="highlight"> <!-- content --></div>
</template>
<template is="dom-if" if="[[!shouldHighlight(talk)]]">
<div><!-- content --></div>
</template>
</paper-item-body>
</paper-item>
</template>
</div>
</template>
Is there a better way to conditionally add CSS classes using Polymer?
You can use a computed function/property to do it:
Inside your template:
<div class$="{{_getClassForHighlight(talk)}}"> <!-- content --></div>
Inside your Polymer elment:
_getClassForHighlight: function(talk) {
if (this.shouldHighlight(talk)) {
return "highlight";
}
return "";
}
Related
Is there a method with CSS in which to set the CSS for paper-input such that the label is hidden?
I am wanting to remove the empty space where the label would appear.
Developer tools shows the following property for the area...
<vaadin-grid-column>
<template class="header">
<div class="horizontal layout cell">
<label for="keyFilter" class="cell">Key</label>
<vaadin-grid-filter class="cell" id="keyFilter" path="key" value="[[_filterKey]]">
<paper-input style="" slot="filter" placeholder="Search" value="{{_filterKey::input}}" focus-target></paper-input>
</vaadin-grid-filter>
</div>
</template>
<template class="cell">[[item.key]]</template>
</vaadin-grid-column>
You don't need css to do that. Just add no-label-float inside paper-input element.
For example:
<paper-input no-label-float placeholder="Search"></paper-input>
How do I close the drawer panel when I click a paper item. I do not seem to understand the documentation or other similar questions.
<paper-drawer-panel responsive-width="800px">
<paper-header-panel drawer id="drawer">
<div class="horizontal-section-container">
<div class="horizontal-section">
<paper-menu>
<paper-icon-item onclick="closeDrawer()" id="icon">
<iron-icon icon="favorite" item-icon></iron-icon>
Favorite
</paper-icon-item>
<paper-item>Inbox</paper-item>
<paper-item>Starred</paper-item>
<paper-item>Sent mail</paper-item>
<paper-item>Drafts</paper-item>
</paper-menu>
</div>
</div>
<!--<ul>
<li><paper-ripple></paper-ripple>One</li>
<li><paper-ripple></paper-ripple>Two</li>
<li><paper-ripple></paper-ripple>Three</li>
</ul>-->
</paper-header-panel>
<!-- <paper-header-panel main>
<paper-toolbar>
<paper-icon-button icon="menu" paper-drawer-toggle></paper-icon-button>
<div class="title">Title</div>
</paper-toolbar>
<div>
</div>
</paper-header-panel>
-->
I am using polymer with meteor 1.2.1. Can anyone please help me out?
On your paper-icon-item (why not use paper-icon-button here?) Add the attribute paper-drawer-toggle.
So you code will look like:
Favorite
The docs for the paper-drawer-element state:
An element that should toggle the drawer will automatically do so if it's given the paper-drawer-toggle attribute. Also this element will automatically be hidden in wide layout.
this will be an alternative method
drawerToggle: function() {
if (this.$.drawer.narrow && this.$.drawer.getBoundingClientRect().width < parseInt(this.$.drawer.responsiveWidth)) {
this.$.drawer.togglePanel();
} else {
this.$.drawer.forceNarrow = !this.$.drawer.forceNarrow;
}
}
http://jsbin.com/winedi/edit?html,output
In the onclick function of your paper element add this snippet.
if (!this.$.drawer.persistent) {
this.$.drawer.close();
}
I am building a full-screen app with Polymer. Currently, I've defined my layout like this:
<body unresolved class="fullbleed">
<template is="dom-bind" id="app">
<paper-scroll-header-panel fixed>
<paper-toolbar>
<div class="spacer title" style="margin-left:0px;">My App</div>
<paper-icon-button icon="search"></paper-icon-button>
<paper-icon-button icon="more-vert"></paper-icon-button>
</paper-toolbar>
<paper-drawer-panel id="paperDrawerPanel">
<div drawer>
<my-nav flex></my-nav>
</div>
<div main class="content">
<my-view></my-view>
</div>
</paper-drawer-panel>
</paper-scroll-header-panel>
</template>
</body>
The view in <div main class="content"> looks like this:
my-view.html
<dom-module id="project-view">
<template>
<neon-animated-pages class="flex" selected="[[selectedPageIndex]]" entry-animation="fade-in-animation" exit-animation="fade-out-animation">
<!-- Page 1 -->
<div>
<paper-header-panel mode="seamed">
<div class="paper-header">
<paper-toolbar class="view-toolbar">
<paper-icon-button icon="menu"></paper-icon-button>
<span class="flex"></span>
<paper-icon-button icon="menu"></paper-icon-button>
</paper-toolbar>
</div>
<div class="content">
<paper-material elevation="2">
<h1>Welcome</h1>
<p>
This will be a BIG text block that require scrolling. The toolbar should always be visible. The "paper" should scroll under the toolbar like a Google Doc
</p>
</paper-material>
</div>
</paper-header-panel>
</div>
<!-- Page 2 -->
<div>
<paper-material elevation="2">
<p>Another page</p>
</paper-material>
</div>
</neon-animated-pages>
<script>
Polymer({
is: "my-view",
ready: function() {
this.selectedPageIndex = 0;
}
});
</script>
</template>
</dom-module>
When I run this page, the content under the toolbar will not scroll. It stays fixed in position. I do not understand why. How do I create some paper under a toolbar so that it scrolls beneath the toolbar like Google Docs?
Update:
Main layout changed to:
<paper-header-panel class="flex" style="background-color:lightcoral;">
<paper-toolbar>
<div class="spacer title" style="margin-left:0px;">My App</div>
<paper-icon-button icon="search"></paper-icon-button>
<paper-icon-button icon="more-vert"></paper-icon-button>
</paper-toolbar>
<div class="flex content" style="background-color:lightsalmon;">
<div class="horizontal layout">
<div drawer>
<my-nav flex></my-nav>
</div>
<div main class="content">
<my-view></my-view>
</div>
</div>
</div>
</paper-header-panel>
The content scrolls. However, the content of the paper-drawer-panel does not fill the remaining area below the toolbar. I do not understand why. It's like the iron-flex-layout stuff isn't working. What am I doing wrong?
My guess is that it has something to do with the paper-drawer-panel being inside of the paper-scroll-header-panel element. On top of that likely being the culprit, you should consider that if you do have the paper-drawer-panel inside of the paper-scroll-header-panel, it will scroll with your content.
I would try either removing or moving the paper-drawer-panel to start with, and then adding it back in once you have the scrolling working.
I'm not sure if this is already implemented, but this blog post might help you as it explicitly mentions the paper-toolbar together with flex layout :
https://blog.polymer-project.org/announcements/2015/12/01/deprecating-deep/
So you could try using mixins instead of the flex-class.
Try to use paper-dialog-scrollable. All you have to do is set width and height of the scroll area. Works with static and dynamic content.
I want to create a structure where i have a list and i can animate each item of the list with hero transitions. But if i make it like this then all items get on top of each other... What should I do?
<template repeat="{{item in items}}">
<div layout vertical content
flex>
<core-animated-pages content
layout vertical flex >
<section>
<paper-shadow class="chain">
{{item}}
</paper-shadow>
</section>
<section>
{{item.artists}}
</section>
</core-animated-pages>
</div>
</template>
To keep the items from overlapping you need to make sure that your element has a height. You can do this by using layout attributes on the body itself and your custom element instance.
<body fullbleed layout vertical>
<polymer-element name="x-foo">
<template>
<template repeat="{{item in items}}">
<div layout vertical flex>
<core-animated-pages layout vertical flex>
<section>
{{item.artist}}
</section>
</core-animated-pages>
</div>
</template>
</template>
<script>
Polymer({
items: [
{
artist: 'Some dude'
},
{
artist: 'Some other dude'
}
]
});
</script>
</polymer-element>
<x-foo layout vertical flex></x-foo>
</body>
Example jsbin
I am trying to make "flex" attribute work nicely when it is specified as light DOM. The sample code below is what I have in a custom element that I am working on.
This works:
<core-scroll-header-panel fixed>
<core-toolbar>
<paper-icon-button icon="arrow-back"></paper-icon-button>
<span flex>Hello!</span>
<paper-icon-button icon="search"></paper-icon-button>
<!--<content select="[toolbar]"></content>-->
</core-toolbar>
<div content>
stuff...
</div>
</core-scroll-header-panel>
Content of select="[toolbar]" is the same 3 lines in the example above. This does not work. Span does not flex:
<core-scroll-header-panel fixed>
<core-toolbar>
<content select="[toolbar]"></content>
</core-toolbar>
<div content>
stuff...
</div>
</core-scroll-header-panel>
Any idea how to make this work? I am ok with a solution where I need to place additional styles in the custom element that I am creating but not sure how to go about it.
Using select="[toolbar] on the <content> insertion point means that your light dom nodes will need a toolbar attribute to be pulled in:
<my-element>
<paper-icon-button toolbar icon="arrow-back"></paper-icon-button>
<span toolbar flex>Hello!</span>
<paper-icon-button toolbar icon="search"></paper-icon-button>
</my-element>
I was able to get this working without issue. It also needed a fit layout attr on the core-scroll-header-panel to give it a size.
<script src="https://www.polymer-project.org/0.5/webcomponents.min.js"></script>
<link rel="import" href="https://www.polymer-project.org/0.5/components/core-scroll-header-panel/core-scroll-header-panel.html">
<link rel="import" href="https://www.polymer-project.org/0.5/components/core-toolbar/core-toolbar.html">
<link rel="import" href="https://www.polymer-project.org/0.5/components/paper-icon-button/paper-icon-button.html">
<polymer-element name="my-element" noscript>
<template>
<core-scroll-header-panel fit>
<core-toolbar>
<content select="[toolbar]"></content>
</core-toolbar>
<div content>
stuff...
</div>
</core-scroll-header-panel>
</template>
</polymer-element>
<my-element>
<paper-icon-button toolbar icon="arrow-back"></paper-icon-button>
<span toolbar flex>Hello!</span>
<paper-icon-button toolbar icon="search"></paper-icon-button>
</my-element>