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* VisualEditor DataModel TableCellableNode class.
*
* @copyright See AUTHORS.txt
*/
/**
* DataModel node which can behave as a table cell
*
* @class
*
* @abstract
* @constructor
*/
ve.dm.TableCellableNode = function VeDmTableCellableNode() {
// Events
this.connect( this, {
attributeChange: 'onCellableAttributeChange'
} );
};
/* Inheritance */
OO.initClass( ve.dm.TableCellableNode );
/* Static Properties */
ve.dm.TableCellableNode.static.isCellable = true;
/* Static Methods */
ve.dm.TableCellableNode.static.areNodesCellable = function ( domNodes ) {
// We can handle a DM node consisting of multiple table cell DOM elements with identical rowspan
// as a table element. Give up on anything else.
const cellElems = new Set( [ 'td', 'th' ] );
return domNodes.every(
( node ) => cellElems.has( node.nodeName.toLowerCase() ) &&
node.rowspan === domNodes[ 0 ].rowspan
);
};
/**
* @typedef {Object} ve.dm.TableCellableNode.TableAttributes
* @property {string} style 'header' or 'data'
* @property {number} [rowspan]
* @property {string} [originalRowspan]
* @property {number} [colspan]
* @property {string} [originalColspan]
* @property {string} [align] DOM attribute align (deprecated)
* @property {string} [valign] DOM attribute valign (deprecated)
* @property {string} [textAlign] CSS property text-align
* @property {string} [verticalAlign] CSS property vertical-align
* @property {string} [originalTextAlign] CSS property text-align (original value)
* @property {string} [originalVerticalAlign] CSS property vertical-align (original value)
*/
/**
* @param {ve.dm.TableCellableNode.TableAttributes} attributes
* @param {HTMLElement[]} domElements
* @param {boolean} isAlien
*/
ve.dm.TableCellableNode.static.setAttributes = function ( attributes, domElements, isAlien ) {
if ( isAlien ) {
// For alienTableCells, we only need the colspan and rowspan, which
// may need to be summed over an about-group (T366984).
let colspan = 0, rowspan = 0;
Array.prototype.forEach.call( domElements, ( node ) => {
const attrs = {};
this.setAttributes( attrs, [ node ], false );
colspan += attrs.colspan || 1;
// TODO: Support a non-rectangular alien group
rowspan = Math.max( rowspan, attrs.rowspan || 1 );
} );
if ( colspan !== 1 ) {
attributes.colspan = colspan;
}
if ( rowspan !== 1 ) {
attributes.rowspan = rowspan;
}
} else {
const style = domElements[ 0 ].nodeName.toLowerCase() === 'th' ? 'header' : 'data';
const colspan = domElements[ 0 ].getAttribute( 'colspan' );
const rowspan = domElements[ 0 ].getAttribute( 'rowspan' );
attributes.style = style;
if ( colspan !== null ) {
attributes.originalColspan = colspan;
if ( colspan !== '' && !isNaN( Number( colspan ) ) ) {
attributes.colspan = Number( colspan );
}
}
if ( rowspan !== null ) {
attributes.originalRowspan = rowspan;
if ( rowspan !== '' && !isNaN( Number( rowspan ) ) ) {
attributes.rowspan = Number( rowspan );
}
}
}
};
/**
* @param {ve.dm.TableCellableNode.TableAttributes} attributes
* @param {HTMLElement} domElement
*/
ve.dm.TableCellableNode.static.applyAttributes = function ( attributes, domElement ) {
const spans = {
colspan: attributes.colspan,
rowspan: attributes.rowspan
};
// Ignore spans of 1 unless they were in the original HTML
if ( attributes.colspan === 1 && Number( attributes.originalColspan ) !== 1 ) {
spans.colspan = null;
}
if ( attributes.rowspan === 1 && Number( attributes.originalRowspan ) !== 1 ) {
spans.rowspan = null;
}
// Use original value if the numerical value didn't change, or if we didn't set one
if ( attributes.colspan === undefined || attributes.colspan === Number( attributes.originalColspan ) ) {
spans.colspan = attributes.originalColspan;
}
if ( attributes.rowspan === undefined || attributes.rowspan === Number( attributes.originalRowspan ) ) {
spans.rowspan = attributes.originalRowspan;
}
ve.setDomAttributes( domElement, spans );
};
/* Methods */
/**
* Get the number of rows the cell spans
*
* @return {number} Rows spanned
*/
ve.dm.TableCellableNode.prototype.getRowspan = function () {
return this.getAttribute( 'rowspan' ) || 1;
};
/**
* Get the number of columns the cell spans
*
* @return {number} Columns spanned
*/
ve.dm.TableCellableNode.prototype.getColspan = function () {
return this.getAttribute( 'colspan' ) || 1;
};
/**
* Get number of columns and rows the cell spans
*
* @return {Object} Object containing 'col' and 'row'
*/
ve.dm.TableCellableNode.prototype.getSpans = function () {
return {
col: this.getColspan(),
row: this.getRowspan()
};
};
/**
* Get the style of the cell
*
* @return {string} Style, 'header' or 'data'
*/
ve.dm.TableCellableNode.prototype.getStyle = function () {
return this.getAttribute( 'style' ) || 'data';
};
/**
* Handle attributes changes
*
* @param {string} key Attribute key
* @param {string} from Old value
* @param {string} to New value
*/
ve.dm.TableCellableNode.prototype.onCellableAttributeChange = function ( key ) {
if ( this.getParent() && ( key === 'colspan' || key === 'rowspan' ) ) {
// In practice the matrix should already be invalidated as you
// shouldn't change a span without adding/removing other cells,
// but it is possible to just change spans if you don't mind a
// non-rectangular table.
this.findParent( ve.dm.TableNode ).getMatrix().invalidate();
}
};
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