Fix native HTML and SVG usage in XML views/fragments that UI5 linter reports but cannot auto-fix. Use this skill when linter outputs:
- `no-deprecated-api` with message "Usage of native HTML in XML Views/Fragments is deprecated"
- `no-deprecated-api` with message "Deprecated use of SVG in XML View or Fragment"
Trigger on: HTML elements in XML views (html:div, html:span, html:a), SVG elements in XML views, xmlns:html namespace usage.
Provides guidance on replacing native HTML with UI5 controls...
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---
name: fix-xml-native-html
description: |
Fix native HTML and SVG usage in XML views/fragments that UI5 linter reports but cannot auto-fix. Use this skill when linter outputs:
- `no-deprecated-api` with message "Usage of native HTML in XML Views/Fragments is deprecated"
- `no-deprecated-api` with message "Deprecated use of SVG in XML View or Fragment"
Trigger on: HTML elements in XML views (html:div, html:span, html:a), SVG elements in XML views, xmlns:html namespace usage.
Provides guidance on replacing native HTML with UI5 controls and SVG with UI5 icons or custom controls.
---
# Fix Native HTML and SVG in XML Views/Fragments
This skill fixes native HTML and SVG usage in XML views/fragments that the UI5 linter detects but cannot auto-fix because they require understanding the appropriate UI5 control replacements.
## Linter Rules Handled
| Rule ID | Message Pattern | This Skill's Action |
|---------|-----------------|---------------------|
| `no-deprecated-api` | Usage of native HTML in XML Views/Fragments is deprecated | Replace with UI5 controls |
| `no-deprecated-api` | Deprecated use of SVG in XML View or Fragment | Replace with UI5 icons or custom controls |
## When to Use
Apply this skill when you see linter output like:
```
MyView.view.xml:15:5 error Usage of native HTML in XML Views/Fragments is deprecated no-deprecated-api
MyView.view.xml:25:5 error Deprecated use of SVG in XML View or Fragment no-deprecated-api
```
Run `npx @ui5/linter --details` to get links to documentation about native HTML deprecation.
## Background: Why Native HTML/SVG is Deprecated
Native HTML in XML views was supported via the `sap.ui.core.HTML` control and the `html` namespace. However, this approach:
- Bypasses UI5's control lifecycle and rendering
- Doesn't integrate with UI5 theming
- Can cause accessibility issues
- Is not compatible with modern UI5 strict mode
## Fix Strategy
### 1. Native HTML Elements → UI5 Controls
**Problem**: Using HTML elements via the `html:` namespace.
```xml
<!-- Before - native HTML usage -->
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:html="http://www.w3.org/1999/xhtml">
<html:div class="myContainer">
<html:span>Some text</html:span>
<html:a href="https://example.com">Link</html:a>
<html:img src="image.png" alt="My Image" />
</html:div>
</mvc:View>
```
**Fix Strategy**: Replace with equivalent UI5 controls.
```xml
<!-- After - UI5 controls -->
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m">
<VBox class="myContainer">
<Text text="Some text" />
<Link text="Link" href="https://example.com" />
<Image src="image.png" alt="My Image" />
</VBox>
</mvc:View>
```
### HTML to UI5 Control Mapping
| HTML Element | UI5 Control | Notes |
|--------------|-------------|-------|
| `<html:div>` | `<VBox>`, `<HBox>`, `<FlexBox>` | Use VBox for vertical, HBox for horizontal layout |
| `<html:span>` | `<Text>`, `<Label>` | Text for display, Label for form labels |
| `<html:p>` | `<Text>` | Use `\n` in text for paragraphs |
| `<html:a>` | `<Link>` | Full link functionality with href |
| `<html:img>` | `<Image>` | Supports src, alt, width, height |
| `<html:input>` | `<Input>`, `<SearchField>` | Various input types available |
| `<html:button>` | `<Button>` | Full button with icon support |
| `<html:ul>` / `<html:li>` | `<List>` / `<StandardListItem>` | Or `<VBox>` with items |
| `<html:ol>` | `<List>` with `<ObjectListItem>` | Use custom numbering |
| `<html:table>` | `<Table>` (sap.m) | Or `<sap.ui.table.Table>` for large data |
| `<html:h1>` - `<html:h6>` | `<Title>` | Use `level` property for heading level |
| `<html:br>` | (none) | Use `\n` in Text or separate controls |
| `<html:hr>` | `<Toolbar>` with `<ToolbarSpacer>` | Or custom styling |
| `<html:iframe>` | `<HTML>` control | Only when absolutely necessary |
| `<html:form>` | (form controls directly) | UI5 handles form submission differently |
| `<html:select>` | `<Select>`, `<ComboBox>` | Full dropdown functionality |
| `<html:textarea>` | `<TextArea>` | Multi-line input |
### 2. Complex HTML Structures
**Problem**: Nested HTML for layout.
```xml
<!-- Before - complex HTML layout -->
<html:div class="header">
<html:div class="logo">
<html:img src="logo.png" />
</html:div>
<html:div class="nav">
<html:a href="#home">Home</html:a>
<html:a href="#about">About</html:a>
</html:div>
</html:div>
```
**Fix Strategy**: Use UI5 layout controls.
```xml
<!-- After - UI5 layout -->
<HBox class="header" alignItems="Center" justifyContent="SpaceBetween">
<Image src="logo.png" class="logo" />
<HBox class="nav">
<Link text="Home" href="#home" class="sapUiSmallMarginEnd" />
<Link text="About" href="#about" />
</HBox>
</HBox>
```
### 3. SVG Graphics → UI5 Icons or Custom Controls
**Problem**: Using SVG directly in XML views.
```xml
<!-- Before - SVG in XML view -->
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:svg="http://www.w3.org/2000/svg">
<svg:svg width="100" height="100">
<svg:circle cx="50" cy="50" r="40" fill="blue" />
</svg:svg>
</mvc:View>
```
**Fix Strategy A - For Icons**: Use UI5 Icon control with icon fonts.
```xml
<!-- After - UI5 Icon -->
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:core="sap.ui.core">
<core:Icon src="sap-icon://circle-task" size="2rem" color="blue" />
</mvc:View>
```
**Fix Strategy B - For Complex Graphics**: Create a custom control or use HTML control.
```javascript
// CustomGraphic.js - for complex SVG that can't be replaced with icons
sap.ui.define([
"sap/ui/core/Control"
], function(Control) {
"use strict";
return Control.extend("my.app.control.CustomGraphic", {
metadata: {
properties: {
color: { type: "string", defaultValue: "blue" }
}
},
renderer: {
apiVersion: 2,
render: function(oRm, oControl) {
oRm.openStart("svg", oControl);
oRm.attr("width", "100");
oRm.attr("height", "100");
oRm.openEnd();
oRm.openStart("circle");
oRm.attr("cx", "50");
oRm.attr("cy", "50");
oRm.attr("r", "40");
oRm.attr("fill", oControl.getColor());
oRm.openEnd();
oRm.close("circle");
oRm.close("svg");
}
}
});
});
```
```xml
<!-- Usage in XML view -->
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:custom="my.app.control">
<custom:CustomGraphic color="blue" />
</mvc:View>
```
### 4. Common Icon Replacements
When replacing SVG icons, use the SAP icon font:
| SVG Pattern | UI5 Icon |
|-------------|----------|
| Checkmark/tick | `sap-icon://accept` |
| Cross/X | `sap-icon://decline` |
| Circle | `sap-icon://circle-task` |
| Arrow right | `sap-icon://navigation-right-arrow` |
| Arrow left | `sap-icon://navigation-left-arrow` |
| Plus/Add | `sap-icon://add` |
| Minus/Remove | `sap-icon://less` |
| Edit/Pencil | `sap-icon://edit` |
| Delete/Trash | `sap-icon://delete` |
| Search | `sap-icon://search` |
| Settings/Gear | `sap-icon://settings` |
| User/Person | `sap-icon://person-placeholder` |
| Calendar | `sap-icon://calendar` |
| Download | `sap-icon://download` |
| Upload | `sap-icon://upload` |
Browse all available icons: [UI5 Icon Explorer](https://ui5.sap.com/test-resources/sap/m/demokit/iconExplorer/webapp/index.html)
### 5. HTML Content That Must Remain
For cases where HTML is absolutely required (e.g., rendering external HTML content):
```xml
<!-- Use sap.ui.core.HTML control with sanitized content -->
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:core="sap.ui.core">
<core:HTML content="{/sanitizedHtmlContent}" sanitizeContent="true" />
</mvc:View>
```
**Warning**: Only use this for content that:
- Cannot be expressed with UI5 controls
- Has been properly sanitized
- Is from a trusted source
### 6. Styling Considerations
When modernizing from HTML to UI5 controls:
1. **CSS Classes**: Apply custom classes via the `class` attribute
```xml
<VBox class="myCustomContainer">
```
2. **Inline Styles**: Use `customData` for CSS variables or the `layoutData` aggregation
```xml
<VBox>
<layoutData>
<FlexItemData growFactor="1" />
</layoutData>
</VBox>
```
3. **Theming**: UI5 controls automatically adapt to the selected theme (Horizon, Quartz, etc.)
## Implementation Steps
1. **Identify HTML/SVG usage** in the linter output
2. **Determine the purpose** of each HTML element:
- Layout container → Use VBox, HBox, FlexBox
- Text content → Use Text, Label, Title
- Interactive elements → Use Button, Link, Input
- Images → Use Image
- Icons → Use sap.ui.core.Icon
3. **Check for custom CSS** that may need updating
4. **Replace elements** with UI5 equivalents
5. **Remove the `xmlns:html` namespace** once all HTML elements are replaced
6. **Test the layout** to ensure visual parity
## Example Fix Session
Given linter output:
```
MyView.view.xml:5:3 error Usage of native HTML in XML Views/Fragments is deprecated no-deprecated-api
MyView.view.xml:12:5 error Deprecated use of SVG in XML View or Fragment no-deprecated-api
```
**Before:**
```xml
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:html="http://www.w3.org/1999/xhtml"
xmlns:svg="http://www.w3.org/2000/svg">
<html:div class="card">
<html:div class="cardHeader">
<svg:svg width="24" height="24">
<svg:circle cx="12" cy="12" r="10" fill="green" />
</svg:svg>
<html:span class="title">Status: Active</html:span>
</html:div>
<html:p>This is the card content.</html:p>
<html:a href="https://example.com">Learn more</html:a>
</html:div>
</mvc:View>
```
**After:**
```xml
<mvc:View
xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:core="sap.ui.core">
<VBox class="card">
<HBox class="cardHeader" alignItems="Center">
<core:Icon src="sap-icon://status-positive" color="green" class="sapUiSmallMarginEnd" />
<Text text="Status: Active" class="title" />
</HBox>
<Text text="This is the card content." />
<Link text="Learn more" href="https://example.com" />
</VBox>
</mvc:View>
```
## Notes
- UI5 controls integrate better with theming, accessibility, and responsive design
- The `html:` namespace should be completely removed once modernization is done
- For complex HTML (like embedded iframes), the `sap.ui.core.HTML` control can be used as a last resort with `sanitizeContent="true"`
- SVG icons should be replaced with UI5 icon font where possible for better theming support
- Consider using `sap.m.FormattedText` for HTML-like rich text formatting
- Custom controls provide the most control for complex graphical requirements
## Related Skills
- **fix-xml-globals**: For other XML view issues like global variable access (`no-globals`), ambiguous event handlers (`no-ambiguous-event-handler`), and legacy `template:require` syntax, use fix-xml-globals
