【发布时间】:2017-12-19 06:58:06
【问题描述】:
我应该如何在 AngularDart 中的用户个人资料图像上实现 angular_components 的弹出。
https://dart-lang.github.io/angular_components_example/#Popups 这个示例链接帮助我了解了 AngularDart 组件及其实现,但我仍然无法在用户个人资料图像上实现它。那么任何人都可以帮助我知道我应该如何做到这一点
提前谢谢你。
app_header.dart
@Component(selector: 'app-header',
templateUrl: 'app_header.html',
styleUrls: const ['app_header.css'],
directives: const [
MaterialButtonComponent,
MaterialPopupComponent,
PopupSourceDirective,
DefaultPopupSizeProvider,
],
providers: const [
popupBindings,
DefaultPopupSizeProvider,
],)
class AppHeader {
final FirebaseService fbService;
bool headerFooterPopupVisible = false;
String get tooltipMsg => 'All the best messages appear in tooltips.';
String get longString => 'Learn more about web development with AngularDart'
'here. You will find tutorials to get you started.';
AppHeader(FirebaseService this.fbService);
}
@Injectable()
PopupSizeProvider createPopupSizeProvider() {
return const PercentagePopupSizeProvider();
}
@Directive(selector: '[defaultPopupSizeProvider]', providers: const [
const Provider(PopupSizeProvider, useFactory: createPopupSizeProvider)
])
class DefaultPopupSizeProvider {}
app_header.html
<header class="navbar-dark bg-primary layout horizontal center justified">
<div class="horiz">
<div id="chat-bubble" class="icon"></div>
<a class="navbar-brand">Dart Chat</a>
</div>
<div class="horiz">
<div id="sign-in" *ngIf="fbService.user == null" class="horiz">
<div id="google-icon" class="icon"></div>
<button class="btn btn-outline-secondary btn-sm"
(click)="fbService.signIn()">Google Sign In</button>
</div>
<div id="sign-out" *ngIf="fbService.user != null" class="horiz">
<div id="user-name">{{fbService.user?.displayName}}</div>
<img class="icon" [src]="fbService.user?.photoURL">
<button class="btn btn-outline-secondary btn-sm" (click)="fbService.signOut()">Sign Out</button>
<material-button class="blue"
raised
popupSource
#headerExampleSource="popupSource"
(trigger)="headerFooterPopupVisible = !headerFooterPopupVisible">
{{headerFooterPopupVisible ? 'Close' : 'Open'}} Custom Popup
</material-button>
<material-popup defaultPopupSizeProvider
enforceSpaceConstraints
[source]="headerExampleSource"
[(visible)]="headerFooterPopupVisible">
<div header class="custom-header">
This is a Header demo
</div>
<div class="custom-body">
Hello, Hello, Hello. This is a tall bit of content that needs a scroll
bar because the content is so long.
</div>
<div footer class="custom-footer">
This is a Footer demo
</div>
</material-popup>
</div>
如果我使用以下代码。
错误:dart_chat_ng2_fb3|lib/views/app_header/app_header.dart 上的 DirectiveProcessor]: 错误:模板解析错误:AppHeader 第 25 行第 7 列:ParseErrorLevel.FA TAL:空元素没有结束标签“img” ^^^^^^ [来自 dart_chat_ng2_fb3|lib/views/app_component/app_co 上的 TemplateCompiler 错误 mponent.ng_meta.json]: 找不到名称的指令/管道条目:AppHeader .请注意,Dart 转换器的支持有限
<img [src]="fbService.user?.photoURL" class="blue"
raised
popupSource
#headerExampleSource="popupSource"
(trigger)="headerFooterPopupVisible = !headerFooterPopupVisible">
{{headerFooterPopupVisible ? 'Close' : 'Open'}} Custom Popup
</img>
<material-popup defaultPopupSizeProvider
enforceSpaceConstraints
[source]="headerExampleSource"
[(visible)]="headerFooterPopupVisible">
<div header class="custom-header">
This is a Header demo
</div>
<div class="custom-body">
Hello, Hello, Hello. This is a tall bit of content that needs a scroll
bar because the content is so long.
</div>
<div footer class="custom-footer">
This is a Footer demo
</div>
</material-popup>
如果我只是将“材料按钮”标签更改为“按钮”,弹出窗口不会出现
【问题讨论】:
-
有什么问题?实际行为是什么?预期的行为是什么?
-
如果 html 标记在任何其他而不是材料按钮中更改,则弹出窗口不起作用
-
你试过什么html标签? “不工作”究竟是什么意思?您是否收到错误消息,或者刚刚出现的弹出窗口?
-
我已经用错误更新了问题,请通过问题。
-
允许的内容 无,它是一个空元素。标签省略 必须有开始标签,不能有结束标签。 developer.mozilla.org/en-US/docs/Web/HTML/Element/img
标签: dart angular-dart angular-components dart-html dart-webui