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Add minimize and maximize buttons to Dialog header in Vue Dialog component

29 Sep 2022 / 3 minutes to read

Vue Dialog allows end users to either minimize or maximize the Dialog component. You can add minimize and maximize custom buttons near the close icon in the Dialog header using the headerTemplate property and handle the actions in the button click events, as shown in the following sample.

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app.vue
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<template>
  <div>
    <div id="target">
        <center><ejs-button ref='button' id="dialogbtn" cssClass="e-info" v-on:click.native="dialogBtnClick">Open</ejs-button></center>
        <ejs-dialog id="dialog" ref="Dialog" :header='headerTemplate' :showCloseIcon='showCloseIcon' :target='target' :width='width' :buttons='buttons' :animationSettings='animationSettings' :visible='visible' :content='content' :closeOnEscape='closeOnEscape' :created="created">
        </ejs-dialog>
    </div>
  </div>
</template>
<script>
import Vue from 'vue';
import { DialogPlugin } from '@syncfusion/ej2-vue-popups';
import { ButtonPlugin } from '@syncfusion/ej2-vue-buttons';
Vue.use(DialogPlugin);
Vue.use(ButtonPlugin);
var headerTemplateVue = Vue.component("demo1", {
    template: '<span><span class="title">Dialog</span><span class="e-icons sf-icon-Maximize" id="max-btn" title="Maximize" ></span><span class="e-icons sf-icon-Minimize" id="min-btn" title="Minimize"></span></span>',
    data() {
        return {
            data: {}
        };
    }
});
var isFullScreen;
var dialogOldPosition;
export default {
    data: function() {
        return {
            headerTemplate: function (){
                return { template: headerTemplateVue }
            },
            content: "This is a dialog with minimize and maximize buttons",
            showCloseIcon: true,
            visible: false,
            buttons: [{ buttonModel: { isPrimary: true, content: 'Yes', iconCss: 'e-icons e-ok-icon' }, click: this.btnClick }, { buttonModel: { content: 'No', iconCss: 'e-icons e-close-icon' }, click: this.btnClick }],
            target: document.body,
            height: 'auto',
            width: '300px',
            animationSettings: { effect: 'Zoom' },
            closeOnEscape: true,
        }
    },
    methods: {
        created: function () {
        document.getElementById("min-btn").addEventListener("click", this.minimize);
        document.getElementById("max-btn").addEventListener("click", this.maximize);
        },
        dialogBtnClick: function() {
            this.$refs.Dialog.show();
        },
        btnClick: function() {
            this.$refs.Dialog.hide();
        }
        maximize: function(){
            var maximizeIcon;
            if (this.$refs.Dialog.$el.classList.contains('dialog-minimized')) {
            this.$refs.Dialog.$el.querySelector('#min-btn').classList.add('sf-icon-Minimize');
            this.$refs.Dialog.$el.querySelector('#min-btn').classList.remove('sf-icon-Restore');
            this.$refs.Dialog.$el.querySelector('#min-btn').setAttribute('title', 'Minimize');
            }
            if (!this.$refs.Dialog.$el.classList.contains('dialog-maximized') && !this.isFullScreen) {
            maximizeIcon = this.$refs.Dialog.$el.querySelector(".e-dlg-header-content .sf-icon-Maximize");
            } else {
            maximizeIcon = this.$refs.Dialog.$el.querySelector(".e-dlg-header-content .sf-icon-Restore");
            }
            if (!this.$refs.Dialog.$el.classList.contains('dialog-maximized')) {
            this.$refs.Dialog.$el.classList.add('dialog-maximized');
            this.$refs.Dialog.show(true);
            maximizeIcon.classList.add('sf-icon-Restore');
            maximizeIcon.setAttribute('title', 'Restore');
            maximizeIcon.classList.remove('sf-icon-Maximize');
            this.$refs.Dialog.$el.querySelector('.e-dlg-content').classList.remove('hide-content');
            this.isFullScreen = true;
            } else {
            this.$refs.Dialog.$el.classList.remove('dialog-maximized');
            this.$refs.Dialog.show(false);
            maximizeIcon.classList.remove('sf-icon-Restore');
            maximizeIcon.classList.add('sf-icon-Maximize');
            maximizeIcon.setAttribute('title', 'Maximize');
            this.$refs.Dialog.$el.querySelector('.e-dlg-content').classList.remove('hide-content');
            this.$refs.Dialog.position = this.dialogOldPositions;
            this.$refs.Dialog.dataBind();
            this.isFullScreen = false;
            }
        }
        minimize: function(){
            var minimizeIcon = this.$refs.Dialog.$el.querySelector(".e-dlg-header-content .sf-icon-Minimize");
            if (!this.$refs.Dialog.$el.classList.contains('e-dlg-fullscreen')) {
            if (!this.$refs.Dialog.$el.classList.contains('dialog-minimized')) {
                this.dialogOldPositions = { X: this.$refs.Dialog.$el.ej2_instances[0].position.X, Y: this.$refs.Dialog.$el.ej2_instances[0].position.Y }
                this.$refs.Dialog.$el.classList.add('dialog-minimized');
                this.$refs.Dialog.$el.classList.remove('dialog-maximized');
                this.$refs.Dialog.$el.querySelector('.e-dlg-content').classList.add('hide-content');
                this.$refs.Dialog.$el.ej2_instances[0].position = { X: 'center', Y: 'bottom' };
                this.$refs.Dialog.dataBind();
                minimizeIcon.classList.add('sf-icon-Restore');
                minimizeIcon.setAttribute('title', 'Restore');
            } else {
                this.$refs.Dialog.$el.classList.remove('dialog-minimized');
                this.$refs.Dialog.$el.querySelector('.e-dlg-content').classList.remove('hide-content');
                minimizeIcon.classList.add('sf-icon-Minimize');
                minimizeIcon.setAttribute('title', 'Minimize');
                minimizeIcon.classList.remove('sf-icon-Restore');
                this.$refs.Dialog.$el.ej2_instances[0].position = this.dialogOldPositions;
                this.$refs.Dialog.dataBind();
            }
            } else {
            this.$refs.Dialog.show(false);
            this.$refs.Dialog.$el.classList.remove('dialog-maximized');
            this.$refs.Dialog.$el.classList.add('dialog-minimized');
            this.$refs.Dialog.$el.querySelector('.e-dlg-content').classList.add('hide-content');
            minimizeIcon.classList.remove('sf-icon-Minimize');
            minimizeIcon.removeAttribute('title');
            this.$refs.Dialog.$el.ej2_instances[0].position = { X: 'center', Y: 'bottom' };
            this.$refs.Dialog.dataBind();
            this.isFullScreen = true;
            }
        }
    }
}
</script>
<style>
@import "../../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";

#app {
    color: #008cff;
    height: 40px;
    left: 45%;
    position: absolute;
    top: 45%;
    width: 30%;
}
#target {
    height: 100%;
    min-height: 350px;
}
.e-ok-icon::before {
    content: '\e7ff';
}

.e-close-icon::before {
    content: '\e825';
}
.control-section {
    height: 100%;
    min-height: 350px;
  }
.dialog-minimized {
    top: 261px !important;  
 }
  .control-section {
    width: 450px;
    height: 500px;
    border: 1px solid black;
  }

  .e-dialog .e-dlg-header {
    width: auto;
  }

  .e-dialog .e-dlg-header .e-icons.sf-icon-Maximize::before,
  .e-dialog .e-dlg-header .e-icons.sf-icon-Minimize::before,
  .e-dialog .e-dlg-header .e-icons.sf-icon-Restore::before {
      position: relative;
  }

  .e-dialog .e-dlg-header .e-icons.sf-icon-Minimize,
  .e-dialog .e-dlg-header .e-icons.sf-icon-Maximize,
  .e-dialog .e-dlg-header .e-icons.sf-icon-Restore {
      font-size: 14px;
      width: 30px;
      height: 30px;
      line-height: 30px;
      float: right;
      position: relative;
      text-align: center;
      cursor: pointer;
  }

  .e-dialog .e-dlg-header .e-icons.sf-icon-Minimize:hover, .e-dialog .e-dlg-header .e-icons.sf-icon-Maximize:hover,
  .e-dialog .e-dlg-header .e-icons.sf-icon-Restore:hover {
      background-color: #e0e0e0;
      border-color: transparent;
      box-shadow: 0 0 0 transparent;
      border-radius: 50%;
  }

  .e-dialog .e-dlg-header .e-icons.sf-icon-Minimize,
  .e-dialog .e-dlg-header .e-icons.sf-icon-Restore {
      padding-left: 5px;
      padding-right: 5px;
  }
  
  .e-dialog .e-dlg-header {
      position: relative;
      top: 1px;
  }
  
  .e-dialog .e-dlg-content.hide-content, .e-dialog .e-footer-content.hide-content {
      display: none;
  }
  
  .e-dialog .e-dlg-header span.title {
      width: 60px;
      display: inline-block;
  }

@font-face {
    font-family: 'Min-Max_FONT';
    src: url(data:application/x-font-ttf;charset=utf-8;base64,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) format('truetype');
    font-weight: normal;
    font-style: normal;
}

[class^="sf-icon-"], [class*=" sf-icon-"] {
    font-family: 'Min-Max_FONT' !important;
    speak: none;
    font-size: 55px;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.sf-icon-Minimize:before {
    content: "\e700";
}

.sf-icon-Maximize:before {
    content: "\e701";
}

.sf-icon-Close:before {
    content: "\e702";
}

.sf-icon-Restore:before {
    content: "\e703";
}
</style>