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import 'sds/privateThemeProvider';
export default class RichText extends LightningElement {
static shadowSupportMode = 'native';
_nodes = [];
_styleMap = new Map();
_copy = false;
connected = false;
_richTextElement;
_richTextContainerElement;
camelize = (s) => s.replace(/-./g, (x) => x[1].toUpperCase());
CONFIGURABLE_TAGS = {
h1: {
props: [
{
cssProperty: 'font-size',
stylingHook: '--sds-c-richtext-h1-font-size',
},
],
},
h2: {
props: [
{
cssProperty: 'font-size',
stylingHook: '--sds-c-richtext-h2-font-size',
},
],
},
h3: {
props: [
{
cssProperty: 'font-size',
stylingHook: '--sds-c-richtext-h3-font-size',
},
],
},
h4: {
props: [
{
cssProperty: 'font-size',
stylingHook: '--sds-c-richtext-h4-font-size',
},
],
},
ul: {
props: [
{
cssProperty: 'padding',
stylingHook: '--sds-c-richtext-list-spacing',
},
],
},
ol: {
props: [
{
cssProperty: 'padding',
stylingHook: '--sds-c-richtext-list-spacing',
},
],
},
p: {
props: [
{
cssProperty: 'margin',
stylingHook: '--sds-c-richtext-p-spacing',
},
],
},
Eglobal: {
props: [
{
cssProperty: 'font-size',
stylingHook: '--sds-c-richtext-font-size',
},
{
cssProperty: 'line-height',
stylingHook: '--sds-c-richtext-font-lineheight',
},
{
cssProperty: 'padding',
stylingHook: '--sds-c-richtext-spacing',
},
],
},
};
connectedCallback() {
if (!this.connected) {
this._copy = !!this.template.host.querySelector('[slot~=copy-label]');
this.connected = true;
}
}
/**
* Return the slotted nodes
* @returns {Array} nodes
* @private
*/
get nodes() {
return this._nodes;
}
/**
* Return the style map
* @returns {Map} style map
* @private
*/
get styleMap() {
return this._styleMap;
}
/**
* Return the Rich Text Element
* @returns {Object} Rich Text Element
* @private
*/
get richText() {
this._richTextElement = this._richTextElement || this.template.querySelector('[part~=rich-text]');
return this._richTextElement;
}
/**
* Return the Rich Text Container Element
* @returns {Object} Rich Text Container Element
* @private
*/
get richTextContainer() {
this._richTextContainerElement =
this._richTextContainerElement || this.template.querySelector('[part~=rich-text-container]');
return this._richTextContainerElement;
}
/**
* Return the Copy Element status
* @returns {Boolean} copy display status
* @private
*/
get copy() {
return this._copy;
}
/**
* Handle default slot change
* @param {*} e
*/
handleSlotChange(e) {
const childNodes = e.target.assignedNodes({ flatten: true });
this._nodes = [...childNodes];
}
/**
* Copies the contents of the rich text elements to clipboard
*/
handleCopy() {
navigator.clipboard.writeText(this.copyRichText());
}
/*E*
* Returns html as string with rich text slotted elements populated with respective styles
* @returns string
*/
@api
copyRichText() {
this.populateStyleMap();
const htmlElementsToExport = [`<div style=\"${this.createStyleStrWithStyleMap()}\">`]; // Start with a opening tag
const configurableTags = Object.keys(this.CONFIGURABLE_TAGS);
this.nodes.forEach((node) => {
if (node instanceof HTMLElement) {
if (configurableTags.includes(node.tagName.toLowerCase())) {
let style = this.prepareStyleForTag(node.tagName);
style += node.style.cssText;
const clonedNode = node.cloneNode(true);
clonedNode.style.cssText = style;
htmlElementsToExport.push(`\t${clonedNode.outerHTML}`);
} else {
const clonedNode = node.cloneNode(true);
I htmlElementsToExport.push(`\t${clonedNode.outerHTML}`);
}
} else {
const textContent = node.textContent.trim().length > 0 ? node.textContent.trim() : null;
if (textContent) {
I const para = document.createElement('p');
para.innerText = textContent;
htmlElementsToExport.push(`\t${para.outerHTML}`);
}
}
});
htmlElementsToExport.push('</div>'); // End with a closing tag
return htmlElementsToExport.join('\n').toString();
}
/**
* Given a html tag name, creates inline styles
* @param {*} tagName
* @returns
*/
prepareStyleForTag(tagName) {
if (!tagName) {
return;
}
tagName = tagName.toLowerCase();
const configurableProps = this.CONFIGURABLE_TAGS[tagName];
if (!configurableProps) {
return;
}
let style = '';
configurableProps.props.forEach((prop) => {
style += `${prop.cssProperty}: var(${prop.stylingHook});`;
});
return style;
}
/**
* Prepares stylesMap with necessary styling hooks and css properties
*/
populateStyleMap() {
this.populateStyleMapWithStylingHooks();
this.populateStyleMapWithOtherStyles();
}
/**
* Populates the styleMap with styling hooks
*/
populateStyleMapWithStylingHooks() {
const configurableTags = Object.keys(this.CONFIGURABLE_TAGS);
configurableTags.forEach((tag) => {
const props = this.CONFIGURABLE_TAGS[tag].props;
ifI (tag === 'global') {
// default css for whole container
props.forEach((prop) =>
this.styleMap.set(
prop.cssProperty,
this.getComputedStyleValOfProp(this.richTextContainer, prop.cssProperty),
),
);
} else {
const configurableEle = this.nodes.find(
(node) =>
node instanceof HTMLElement &&
configurableTags.includes(node.tagName.toLowerCase()) &&
node.tagName.toLowerCase() === tag,
);
if (configurableEle) {
props.forEach((prop) =>
this.styleMap.set(
I prop.stylingHook,
this.getComputedStyleValOfProp(configurableEle, prop.cssProperty),
),
);
}
}
});
}
/**
* Populates the styleMap with css properties that are set directly (without using styling hooks)
* to root tag or to any element via part attribute
*/
populateStyleMapWithOtherStyles() {
const globalStylingHooks = this.CONFIGURABLE_TAGS['global'].props.map((prop) => prop.stylingHook);
[this.template.host, this.richText, this.richTextContainer].forEach((element) => {
const elementStyles = element.style.cssText.trim();
elementStyles.split(';').forEach((styleStr) => {
if (styleStr.includes(':')) {
const prop = styleStr.split(':')[0].trim();
const value = styleStr.split(':')[1].trim();
if (!globalStylingHooks.includes(prop)) {
this.styleMap.set(prop, this.getComputedStyleValOfProp(element, prop) || value);
}
}
});
});
}
/**
* Returns the css property value of a given element
* @param {*} element
* @param {*} cssProp
* @returns
*/
getComputedStyleValOfProp(element, cssProp) {
if (!element || !cssProp) {
return;
}
const computedStyles = getComputedStyle(element);
const cssPropInCamelCase = this.camelize(cssProp);
return computedStyles[cssPropInCamelCase];
}
/**
* Creates inline style string with styleMap contents
* @returns
*/
createStyleStrWithStyleMap() {
let style = '';
this.styleMap.forEach((value, key) => {
style += `${key}: ${value}; `;
});
return style.trim();
}
}
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