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Move the selection to specific position in Document in Vue DocumentEditor component

25 Sep 2022 / 2 minutes to read

Using select API in selection module, You can set cursor position to anywhere in the document.

Selects content based on start and end hierarchical index

Hierarchical index will be in below format.

sectionIndex;blockIndex;offset

The following code snippet illustrate how to select using hierarchical index.

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// Selection will occur between provided start and end offset
this.$refs.container.ej2Instances..documentEditor.editor.insertText("Welcome");
// The below code will select the letters “We” from inserted text “Welcome”
this.$refs.container.ej2Instances..documentEditor.selection.select("0;0;0", "0;0;2");

The following table illustrates about Hierarchical index in detail.

Element Hierarchical Format Explanation
Move selection to Paragraph sectionIndex;blockIndex;offset
Ex: 0;0;0
It moves the cursor to the start of paragraph.
Move selection to Table sectionIndex;tableIndex;rowIndex;cellIndex;blockIndex;offset
Ex: 0;0;0;0;1;0
It moves the cursor to the second paragraph which is inside first row and cell of table.
Move selection to header pageIndex;H;sectionIndex;blockIndex;offset
Ex: 1;H;0;0;0
It moves cursor to the header in second page.
Move selection to Footer pageIndex;F;sectionIndex;blockIndex;offset
Ex: 1;F;0;0;0
It moves cursor to the footer in second page.

Get the selection start and end hierarchical index

Using startOffset, you can get start hierarchical index which denotes the start index of current selection. Similarly, using endOffset, you can get end hierarchical index which denotes the end index of current selection.

The following code snippet illustrate how to get the selection start and end offset on selection changes in document.

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<template>
  <div id="app">
    <ejs-documenteditorcontainer
      ref="container"
      :serviceUrl="serviceUrl"
      height="590px"
      id="container"
      :enableToolbar="true"
      v-on:selectionChange="selectionChanged.bind(this)"
    ></ejs-documenteditorcontainer>
  </div>
</template>
<script>
  import Vue from 'vue';
  import {
    DocumentEditorContainerPlugin,
    DocumentEditorContainerComponent,
    Toolbar,
  } from '@syncfusion/ej2-vue-documenteditor';

  Vue.use(DocumentEditorContainerPlugin);

  export default {
    data() {
      return {
        serviceUrl:
          'https://ej2services.syncfusion.com/production/web-services/api/documenteditor/',
      };
    },
    provide: {
      //Inject require modules.
      DocumentEditorContainer: [Toolbar],
    },
    methods: {
      selectionChanged: function () {
  //Get the start index of current selection
    let startOffset =
      this.$refs.container.ej2Instances.documentEditor.selection.startOffset;
    //Get the end index of current selection
    let endOffset = this.$refs.container.ej2Instances.documentEditor.selection.endOffset;

      }
    }
  };
</script>

Document editor have selectionChange event which is triggered whenever the selection changes in Document.

Selects the content based on left and top position

Here, you can specify the selection settings to select the content based on left and top position.

x denotes the left position and y denotes the top position and extend denotes whether to extend or update selection.

Please check below code sample for reference.

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this.$refs.container.ej2Instances.documentEditor.selection.select({ x: 188.4814208984375 , y: 662.00005, extend: true });