Footer Plugin

The Footer Plugin automatically adds a statistics footer to the on-CodeMerge editor, displaying real-time document statistics including word count, character count, and other metrics.

Features

• Real-time Statistics: Live word and character counting
• Automatic Updates: Statistics update as content changes
• Document Metrics: Words, characters, paragraphs, sentences
• Customizable Display: Configurable footer appearance
• Performance Optimized: Efficient calculation algorithms
• Content Monitoring: Automatic content change detection
• Statistics Calculator: Advanced metrics calculation
• Footer Renderer: Flexible footer rendering system

Install and CSS: see Editor API — Getting Started.

Basic Usage

import { Editor, FooterPlugin } from 'on-codemerge';

const editor = new Editor(container, {
  plugins: [FooterPlugin()],
});

Demo

---

Public API (v2)

Factory: FooterPlugin().

No named commands — toolbar / menu UI only.

Note: Footer chrome only. No getStatistics public API.

Examples

Basic Footer Usage

// Initialize with footer plugin
const editor = new Editor(container, {
  plugins: [FooterPlugin()],
});

// Footer will automatically appear with statistics

Custom Statistics Display

// Custom statistics calculation
const customStats = statisticsCalculator.calculate(content, {
  includeHTML: false,
  countSpaces: true,
  estimateReadingTime: true,
});

// Custom footer rendering
footerRenderer.update(customStats);

Integration Examples

React Integration

import React, { useEffect, useRef, useState } from 'react';
import { Editor, FooterPlugin } from 'on-codemerge';

function MyEditor() {
  const editorRef = useRef(null);
  const editorInstance = useRef(null);
  const [statistics, setStatistics] = useState({});

  useEffect(() => {
    if (editorRef.current && !editorInstance.current) {
      editorInstance.current = new Editor(editorRef.current);
      editorInstance.current.use(FooterPlugin());

      // Track statistics
      editorInstance.current.on('statistics:updated', (stats) => {
        setStatistics(stats);
      });
    }

    return () => {
      if (editorInstance.current) {
        editorInstance.current.destroy();
      }
    };
  }, []);

  return (
    <div>
      <div ref={editorRef} className="editor-container" />
      <div className="statistics-display">
        Words: {statistics.words} | Characters: {statistics.characters}
      </div>
    </div>
  );
}

Vue Integration

<template>
  <div>
    <div ref="editorContainer" class="editor-container"></div>
    <div class="statistics-panel">
      <span>Words: {{ stats.words }}</span>
      <span>Characters: {{ stats.characters }}</span>
      <span>Reading time: {{ stats.readingTime }} min</span>
    </div>
  </div>
</template>

<script>
import { Editor, FooterPlugin } from 'on-codemerge';

export default {
  name: 'MyEditor',
  data() {
    return {
      editor: null,
      stats: {}
    };
  },
  mounted() {
    this.editor = new Editor(this.$refs.editorContainer);
    this./* use plugins: [FooterPlugin()] in Editor(...) */;

    this.editor.on('statistics:updated', (stats) => {
      this.stats = stats;
    });
  },
  beforeDestroy() {
    if (this.editor) {
      this.editor.destroy();
    }
  }
};
</script>

Styling

Default Styles

/* Footer container */
.editor-footer {
  background-color: #f9fafb;
  border-top: 1px solid #e5e7eb;
  padding: 12px 16px;
  font-size: 14px;
  color: #6b7280;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Statistics items */
.statistics-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 16px;
}

.statistics-label {
  font-weight: 500;
  color: #374151;
}

.statistics-value {
  color: #6b7280;
  font-family: monospace;
}

/* Footer themes */
.footer-light {
  background-color: #ffffff;
  border-color: #e5e7eb;
}

.footer-dark {
  background-color: #1f2937;
  border-color: #374151;
  color: #f9fafb;
}

Troubleshooting

Common Issues

1. Statistics not updating

   • Check content change subscription
   • Verify calculator is working
   • Check for JavaScript errors
   • Ensure footer renderer is initialized

2. Footer not appearing

   • Check if plugin is initialized
   • Verify container structure
   • Check for CSS conflicts
   • Ensure renderer is working

3. Incorrect statistics

   • Check calculation algorithm
   • Verify content parsing
   • Check for HTML tags in count
   • Ensure proper text extraction

Debug Mode

// Add console logging
console.log('Footer plugin initialized');

// Check statistics calculation
const content = editor.getHtml();
const stats = statisticsCalculator.calculate(content);
console.log('Calculated statistics:', stats);

// Check footer updates
editor.on('statistics:updated', (stats) => {
  console.log('Statistics updated:', stats);
});

Browser Support

• Chrome 60+
• Firefox 55+
• Safari 12+
• Edge 79+

License

MIT License - see LICENSE file for details.