vue changes dialog style

Vue is a popular JavaScript framework used by many web developers to build dynamic, interactive single-page applications. One of the common functions is to display interactive content through a dialog pop-up window. In terms of specific implementation, opening a dialog pop-up window is relatively easy, but changing the style is more challenging. This article will explore how to change the style of the dialog component in Vue.

Analysis Dialog

Vue’s Dialog component is a dynamically displayed component, which is mainly divided into two aspects, style and data. The Dialog component itself is composed of a layer of HTML elements containing a mask layer and a dialog box. The mask layer is used to cover the entire screen to prevent users from continuing to interact with the page after the pop-up window is opened. The dialog box will display specific content and data. Through the analysis of Dialog, we can see that the process of modifying the style requires controlling these two aspects.

Using global styles

A common way to modify Dialog styles is to use global styles. By defining CSS styles at the application level, you can override the defaults or add custom styles. This means that we can change the style of the Dialog through a common style similar to the following:

<style>
.fullscreen{
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}
.dialog-custom {
    width: 50%;
    height: 50%;
    border-radius: 5px;
    background: white;
}
</style>

In the above style, we define a full-screen display stylefullscreen and a dialog box style dialog-custom and then bind these styles to the dialog component. To do this, just bind the dialogClass property to the dialog-custom style class, as in the following Vue code snippet:

<template>
  <v-dialog v-model="dialog" :fullscreen="fullscreen" :overlay="overlay"
           :overlay-color="overlayColor" :overlay-opacity="overlayOpacity"
           :dialog-class="'dialog-custom'">
    <v-card>
      <v-card-title>
        <span>{{ title }}</span>
      </v-card-title>
      <v-card-text>
        <span>{{ text }}</span>
      </v-card-text>
      <v-card-actions>
        <v-spacer></v-spacer>
        <v-btn color="primary" text @click="dialog = false">Close</v-btn>
      </v-card-actions>
    </v-card>
  </v-dialog>
</template>

We will dialogCustom The style class is assigned to the dialog-class attribute as the binding value to apply this style. Compared with other solutions, this method is simpler and suitable for situations where the styles of all pop-up boxes will be adjusted. However, it may have an impact on the Dialog style used globally. So be wary of potential side effects when using this method.

Customize Dialog

A more powerful way to modify the Dialog style is to customize the Dialog component. In Vue, we can use the Vue.extend() method to extend existing controls or create custom components. By customizing the Dialog component, we can adjust the specific style for specific situations, so this is a more recommended approach.

<script>
import Vue from 'vue';

export default Vue.extend({
  name: 'my-dialog',
  props: {
    title: { type: String, default: '' },
    text: { type: String, default: '' },
  },
  components: {
    VDialog,
    VCard,
    VCardActions,
    VCardText,
    VCardTitle,
    VSpacer,
  },
  data: () => ({
    dialog: false,
    fullscreen: false,
    overlay: true,
  }),
  methods: {
    showDialog() {
      this.dialog = true;
    },
    closeDialog() {
      this.dialog = false;
    },
  },
});
</script>

In the above code, we create a custom component named my-dialog and extend it into Vuetify’s Dialog component. The properties of the custom component include title and text, and include all the default properties of the Dialog component.

The main way to modify the style is to change the component's template and style. In this example, use a style like this:

<style scoped>
/* customize dialog style */
.my-dialog.v-dialog .v-card {
  width: 600px !important;
  height: 600px !important;
  border-radius: 10px;
  box-shadow: 0px 3px 5px rgba(0, 0, 0, 0.2);
  background-color: #ffffff;
  overflow: hidden;
}
.my-dialog.v-dialog .v-card__text {
  padding: 0px;
  overflow-y: scroll;
  max-height: calc(100% - 152px);
}
.my-dialog.v-dialog .v-card__title {
  background-color: #3f51b5;
  font-size: 24px !important;
  color: #ffffff;
  padding: 20px 20px;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
</style>

In a style like this, we use the .my-dialog.v-dialog .v-card selector to change the style of the dialog . We change the width and height of the dialog box to 600 pixels, and set larger rounded corners and shadow. Use .v-card__text to customize the inward margins and vertical scrollbar, and .v-card__title to change the color and font size of the title.

Finally, to use this custom Dialog component, you need to use it in the main template:

<template>
  <div>
    <v-btn @click="showDialog">Open Dialog</v-btn>
    <my-dialog v-model="dialog" :title="'Hello World!'" :text="'Welcome to my custom dialog!'"></my-dialog>
  </div>
</template>

In the above code, we use my-dialog since Define the component and assign the necessary properties, such as title and text, and then use the v-model directive and dialog to bind the data.

Conclusion

In web development, dialog pop-up windows need to meet different style requirements. In the Vue framework, we can change the style requirements of all dialogs through global styles, or have better control over the details of the style through custom components. This article provides methods that allow you to change the style of a dialog in simple or complex ways to suit your creative and design options.

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