Help Center/ Huawei Cloud Astro Zero/ User Guide (Low-Code)/ Frontend Development/ Standard Pages/ Setting Properties of Standard Page Widgets/ Setting Properties of the Video Widget
Updated on 2025-08-26 GMT+08:00
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Setting Properties of the Video Widget

On standard pages, this widget is used to play videos in MP4, OGV, and WebM formats.

Figure 1 Video

Data Binding

For widgets on standard pages, different view models are created to link various data sources to the return values or property values of the widgets, enabling dynamic data effects.
  • Value binding: Value binding is similar to the v-model of the Vue. Bidirectional data binding is created on the widget. Value binding automatically selects the correct method to update the element based on the widget type. In addition, it checks events that cause binding data changes to update data.
    1. In the Data Binding area, click in the value binding area. The Select Model dialog box is displayed.
    2. Click New.
    3. Set Model Name and Source, and click Next.
      Figure 2 Defining a model

      There are four types of models: Custom, Objects, Services, and Events. Each type of model contains parameter definitions and method definitions. Methods are APIs defined on models. In general, these APIs are called in event scripts (such as page loading events and mouse click events) associated with frontend widgets to implement certain logic.

      Table 1 Model types

      Type

      Model Description

      Model Parameter Description

      Model Method Description

      API Calling Method

      Custom

      Models defined by developers.

      Defined by developers. Subnodes can be added.

      Developer-defined method.

      $model.ref("modelName").actionName();

      Objects

      Object models are generated based on the mapping of the object table. For details about the object model, see Objects.

      The system automatically obtains all fields of an object. Developers can select some fields as parameters.

      The system automatically generates four methods: query, save, delete, and count.
      • Query: $model.ref("modelName").query(param);
      • Save: $model.ref("modelName").save();
      • Delete: $model.ref("modelName").delete();
      • Statistics: $model.ref("modelName").count();

      Services

      Service models are generated by mapping backend services. Currently, service models can only be mapped to flows or scripts. For details about the service model, see Flows and Scripts.

      The parameters are mapped to the inputParam and outputParam sections based on the input and output parameters of backend services.

      The run method is automatically generated to execute a flow or a script associated with the model.

      $model.ref("modelName").run();

      Events

      For event models, data binding is created based on fields of a backend event. Model data can be updated based on the web socket.

      Parameters are generated by mapping fields of backend events.

      Directly use.

      Directly use.

      In addition to the methods defined in models, the platform provides the following standard APIs for all models:

      • Obtaining model data: $model.ref("modelName").getData();
      • Setting model data: $model.ref("modelName").setData();
      • Setting model field values: $model.ref("modelName").setValue(key,value);
    4. On the Settings page of the new model, perform the following operations:
      • If Source is set to Custom in the previous step, you need to add customized parameters and types of subnodes.
      • If Source is set to Objects in the previous step, you need to configure the object and fields associated with the model.
      • If Source is set to Services in the previous step, you need to configure the backend service associated with the model. The backend service can be a script, flow, or public API.
      • If Source is set to Events in the previous step, you need to configure the event and event fields associated with the model.
    5. Click Next.

      Generally, you do not need to add a method. If you need to add or modify a method, refer to the method generated by the object and service by default.

    6. Click OK.
  • Property Binding: Binds a property of a container widget, such as hiding, style, and elastic layout, to a specific model field. Once bound, these properties automatically update in sync with the model field's value, functioning in a manner akin to Vue's v-bind directive.
    1. In the Data Binding area, click + next to Property Binding.
    2. Select a property of the container from the Properties drop-down list.
    3. Under Field, click . The model selection page is displayed.
    4. Click New.
    5. Set Model Name and Source, and click Next.
      There are four types of models: Custom, Objects, Services, and Events. Each type of model contains parameter definitions and method definitions. Methods are APIs defined on models. In general, these APIs are called in event scripts (such as page loading events and mouse click events) associated with frontend widgets to implement certain logic. For details, see Table 1.
      Figure 3 Defining a model
    1. On the Settings page of the new model, perform the following operations:
      • If Source is set to Custom in the previous step, you need to add customized parameters and types of subnodes.
      • If Source is set to Objects in the previous step, you need to configure the object and fields associated with the model.
      • If Source is set to Services in the previous step, you need to configure the backend service associated with the model. The backend service can be a script, flow, or public API.
      • If Source is set to Events in the previous step, you need to configure the event and event fields associated with the model.
    2. Click Next.

      Generally, you do not need to add a method. If you need to add or modify a method, refer to the method generated by the object and service by default.

    3. Click OK.

Basic Properties

After basic attributes are bound through data, the values of the bound data are used during running.
  • Video URL: Enter the address of the custom video.
  • Thumbnail: Select or upload an image as the video cover.
  • Control Bar: Whether to display the control bar during video playback.
  • Mute: Whether to mute a video.
  • Autoplay: Whether to automatically play a video. This property must be set together with Mute. For example, if you enable Auto Play, you must also enable Mute.
  • Playback Speed: Whether to support playback at different speeds. After this property is enabled, you can set the video playback speed to 0.5x, 1x, 1.5x, or 2x.
  • Loop: Whether to enable cyclic playback.

Common

  • Name: name of the current widget.
  • Hid: indicates whether to hide the widget. In this mode, the widget is statically hidden. You can also set the attribute value of the widget to a model field of the Boolean type. In this way, you can control the value of the model field in the customized JavaScript code to determine whether to hide the widget. This dynamic setting has the highest priority.

Layout

  • Layout: Set the width and height of the widget.
  • Advance > Style Code: Style code of the widget. After the widget style is set, the style code is automatically displayed in this area. You can also customize the style code to configure the widget in detail. The customized code can be entered in multiple lines and the style parameters are highlighted.
Parent Topic: Setting Properties of Standard Page Widgets