Drop-down Menu

In our component library, we offer a wide range of components. To simplify the design process during project development, we have preset some styles for these components. However, you can still modify their styles based on these presets.

During the process of using the component, we can set it up according to the following steps:

1. Add Components

If you are not very familiar with the components, you can find the component through the Components window and then add it, as shown in the image below:

If you are more familiar with the components, you can open the search box by pressing Ctrl+F on your keyboard and search for the component you want to add.

2. Set Component Styles

Click to select the component, and in the right-side “Style” settings window, you will see various categories of settings. Each category contains different settings, which may vary depending on the component.

2.1 Fixed Style Settings

Fixed styles refer to the component styles that remain constant once set, in contrast to conditional styles discussed in Section 3.2, which change based on data variations.

Next, we will provide a detailed introduction to each of these settings.

2.1.1 Basic Settings

Transparency changes of the Menu, as shown in the figure below:

2.1.2 Option Settings

(1) Basic Settings

Drop-down Menu option styles are shown in the figure below:

(2) Selection Box Style

Basic Drop-down Menu selection box styles are shown in the figure below:

（3）Dropdown Box Style

Drop-down Menu** dropdown box** styles are shown in the figure below:

2.1.3 Font Settings

Drop-down Menu font styles are shown in the figure below:

2.1.4 Size & Position

You can adjust the size and position by directly clicking and dragging the components, or by directly entering the width, height, X coordinate, and Y coordinate.

Image: Size & Position parameter diagram, as shown below:

2.1.5 Border Settings

After enabling the **”Border Settings” **button, the border style will be displayed in the component, and you will be able to configure the overall border style of the component.

Image border style, as shown in the image below:

2.1.6 Background Settings

By default, components have no background color. If you need to set a background color, you must first enable the “Background Settings” option.

Image use .9 fill background style, as shown in the following image:

Image fill background style, as shown below:

2.2 Conditional styles

Conditional styles refer to the styles of a component that change based on data conditions. (For more information on setting data conditions, please refer to the tutorial: Data Condition).

Almost all setting items can be set with conditional styles, but different setting items have slight differences when setting conditional styles. There are two specific methods:

Method 1: Set in the Extended Settings Drop-down Menu

Most setting items use Method 1 for conditional settings. The specific steps are as follows:

Take the “Opacity” setting item in “Basic Settings” as an example:

Click to select the component, move the mouse over the setting item, and you will see three dots (extended settings button) appear on the right side of the setting item name.

Click these three dots to open the extended settings window, where the first option is “Conditional Style” .

Additionally, you can open the extended settings window by right-clicking the setting item.

Click “Conditional Style” to open the conditional style settings window.

Click “+ Add Conditional Style” ,then select the data condition that needs to be triggered (the selectable data conditions must be existing data conditions).

Based on the current setting item, we can set the opacity value when Condition 1 is met, as well as the opacity value when no conditions are met.

After setting, the setting item will show a “Conditional Style Enabled” prompt.

Method 2: Directly Set in the Setting Item

Some setting items’ conditional setting methods are displayed directly within the setting item and can be set directly in that setting item. However, the conditional style for the basic single-line text can only be set using Method 1.

2.3 Setting Styles via Data Fields

All modifications to setting items are essentially value changes, so all setting items can be controlled through data fields. The dynamic data field function is needed here.

Still taking the “Opacity” setting item in “Basic Settings” as an example:

Open the extended settings window and click the third option, “Generate Data Field”.

After clicking, a prompt saying “Please set data field” will appear for this setting item.

Switch to the “Data” settings interface. At this point, you will see a newly added “Dynamic Data Field” setting item, and a related field has been generated for the previously selected “Opacity” setting item.

Next, simply add a data field here, and you can control the opacity through data.

Adding a data value of “0” to the data field will change the opacity value to “0” via the dynamic data field, thereby hiding the component.

3. Set interaction

The basic dropdown menu component typically interacts with the tab component.
Following the instructions in Chapter 1, add a tab component.

Click to select the basic dropdown menu component, then in the **”Interaction” **settings window on the right, you can add or remove interactions for the current component.

After clicking** “Add Interaction” **, set up the interactions as follows:

1. Enable **”Set Item by Item” **and set the interaction so that when “Tab 1” is clicked, the basic tab component displays the “1-Button” panel.

2. Set the interaction so that when “Tab 2” is clicked, the basic tab component displays “2-Button”.

3. Set the interaction so that when “Tab 3” is clicked, the basic tab component displays “3-Button”.

After setting up, clicking different options in the basic dropdown menu component will cause the basic tab component to switch to the corresponding tab.

4. Secondary Development

Click on the widget to select it, and in the right-side “Code” settings window, you can configure secondary development settings for the widget.

Secondary development needs to be achieved by loading JavaScript script files.

Click “+” to add settings. Multiple scripts can add multiple settings.

During the secondary development process, we can control the style of the widget. If we want to control a certain setting item, we can first view the secondary development code example of the setting item in the style.

Take the “Opacity” setting item as an example:

Open the pop-up window of the extended settings and click “Sample code”.

You can see the secondary development code sample for this setting item.

Here is a simple secondary development example:

Secondary development function: widgets automatically move to the right

Sample code:

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/**
 * Extension.prototype.element;
 * Extension.prototype.enabled;
 * Extension.findExtensionsOfClass(className)
 * Element.prototype.setOption()
 * Element.prototype.getOption()
 * Element.prototype.getFullData()
 * Element.prototype.name
 */
class Button{
  update(){
    const position = this.element.getOption(
      ["position"]
    );
    // The current element moves a certain distance on the X axis
    this.element.setOption(
      ["position"],
      [(position[0] + 1 )%100,position[1]]
    );
  }
}
export default Button;

Click “Select File” to add the JavaScript file.

5. Set up multi-state switching

5.1 Add states

Each widget has a default state property, which contains all the above settings.

But we can also add multiple states, so that each state will contain all the above settings, and these states are independent of each other.

We can add new states in the following two ways:

5.1.1 Create a new state

Click the “+” in the upper right corner to add a new widget state.

In the state setting window, we can set the name of the state.

By default, all new states are kept consistent with the default state.

We also open the advanced settings in the window to set the follow object of the new state.

5.1.2 Copy an existing state

Click the state name in the upper right corner to expand the state list. After expanding, you can see all the states of the current widget.

In this state list, we can rename, copy and delete the state.

Click the copy button on the right side of the state name to copy the current state to a new state. All settings of the copied new state will be consistent with the copied object state.

5.2 Switch states

When editing a project, we can manually switch widget states by clicking on different states in the state list.

5.3 Locked state

In the style settings, some settings have a lock icon on them, which means that this setting item in all current states has been locked to the default state, which means that if this setting item is modified, this setting item in all states will be modified uniformly.

This is a function that allows you to uniformly modify the same setting items in multiple states in a widget’s multiple states.

If you don’t want to lock it, you can click to unlock it, and then this setting item in all states will be unlocked.

If you want to lock other settings, you can click the three dots on the right side of the setting item and then lock it.