Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | 1x 1x 1x 1x 1x 1x 84x 43x 43x 43x 43x 61x 61x 23x 23x 23x 15x 15x 30x 15x 15x 15x 15x 5x 10x 10x 10x 8x 8x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 1x 8x 5x 38x 38x 38x 38x 40x 40x 40x 40x 36x 36x 3x 33x 36x 36x 4x 3x 3x 3x 1x 43x 23x 18x 18x 1x 1x 1x 55x 165x 55x 55x 55x 55x 48x 55x 9x 46x | import { findListItemsInSameThread } from '../list/findListItemsInSameThread';
import { getListAnnounceData } from '../list/getListAnnounceData';
import { IndentStepInPixel } from '../common/adjustIndentation';
import { splitSelectedParagraphByBr } from './splitSelectedParagraphByBr';
import {
createListLevel,
getOperationalBlocks,
isBlockGroupOfType,
mutateBlock,
parseValueWithUnit,
updateListMetadata,
} from 'roosterjs-content-model-dom';
import type {
ContentModelBlockFormat,
ContentModelListItem,
ContentModelListLevel,
FormatContentModelContext,
ReadonlyContentModelBlock,
ReadonlyContentModelBlockGroup,
ReadonlyContentModelDocument,
ReadonlyContentModelListItem,
} from 'roosterjs-content-model-types';
/**
* @param model The content model to set indentation
* @param indentation The indentation type, 'indent' to indent, 'outdent' to outdent
* @param length The length of indentation in pixel, default value is 40
* Set indentation for selected list items or paragraphs
*/
export function setModelIndentation(
model: ReadonlyContentModelDocument,
indentation: 'indent' | 'outdent',
length: number = IndentStepInPixel,
context?: FormatContentModelContext
) {
splitSelectedParagraphByBr(model);
const paragraphOrListItem = getOperationalBlocks<ContentModelListItem>(
model,
['ListItem'],
['TableCell']
);
const isIndent = indentation == 'indent';
const modifiedBlocks: ReadonlyContentModelBlock[] = [];
paragraphOrListItem.forEach(({ block, parent, path }) => {
if (isBlockGroupOfType<ContentModelListItem>(block, 'ListItem')) {
const thread = findListItemsInSameThread(model, block);
const firstItem = thread[0];
//if the first item is selected and has only one level, we should add margin to the whole list
if (isSelected(firstItem) && firstItem.levels.length == 1) {
const level = block.levels[0];
const { format } = level;
const { marginLeft, marginRight } = format;
const newValue = calculateMarginValue(format, isIndent, length);
const isRtl = format.direction == 'rtl';
const originalValue = parseValueWithUnit(isRtl ? marginRight : marginLeft);
if (!isIndent && originalValue == 0) {
block.levels.pop();
} else Eif (newValue !== null) {
Iif (isRtl) {
level.format.marginRight = newValue + 'px';
} else {
level.format.marginLeft = newValue + 'px';
}
}
//if block has only one level, there is not need to check if it is multilevel selection
} else Eif (block.levels.length == 1 || !isMultilevelSelection(model, block, parent)) {
if (isIndent) {
const threadIdx = thread.indexOf(block);
const previousItem = thread[threadIdx - 1];
const nextItem = thread[threadIdx + 1];
const levelLength = block.levels.length;
const lastLevel = block.levels[levelLength - 1];
const newLevel: ContentModelListLevel = createListLevel(
lastLevel?.listType || 'UL',
lastLevel?.format,
previousItem && previousItem.levels.length > levelLength
? previousItem.levels[levelLength].dataset
: nextItem && nextItem.levels.length > levelLength
? nextItem.levels[levelLength].dataset
: undefined
);
updateListMetadata(newLevel, metadata => {
metadata = metadata || {};
metadata.applyListStyleFromLevel = true;
return metadata;
});
// New level is totally new, no need to have these attributes for now
delete newLevel.format.startNumberOverride;
block.levels.push(newLevel);
} else {
block.levels.pop();
}
if (block.levels.length > 0 && context) {
context.announceData = getListAnnounceData([block, ...path]);
}
}
} else Eif (block) {
let currentBlock: ReadonlyContentModelBlock = block;
let currentParent: ReadonlyContentModelBlockGroup = parent;
while (currentParent && modifiedBlocks.indexOf(currentBlock) < 0) {
const index = path.indexOf(currentParent);
const { format } = mutateBlock(currentBlock);
const newValue = calculateMarginValue(format, isIndent, length);
if (newValue !== null) {
const isRtl = format.direction == 'rtl';
if (isRtl) {
format.marginRight = newValue + 'px';
} else {
format.marginLeft = newValue + 'px';
}
modifiedBlocks.push(currentBlock);
break;
} else if (currentParent.blockGroupType == 'FormatContainer' && index >= 0) {
mutateBlock(currentParent);
currentBlock = currentParent;
currentParent = path[index + 1];
} else {
break;
}
}
}
});
return paragraphOrListItem.length > 0;
}
function isSelected(listItem: ReadonlyContentModelListItem) {
return listItem.blocks.some(block => {
Eif (block.blockType == 'Paragraph') {
return block.segments.some(segment => segment.isSelected);
}
});
}
/*
* Check if the selection has list items with different levels and the first item of the list is selected, do not create a sub list.
* Otherwise, the margin of the first item will be changed, and the sub list will be created, creating a unintentional margin difference between the list items.
*/
function isMultilevelSelection(
model: ReadonlyContentModelDocument,
listItem: ReadonlyContentModelListItem,
parent: ReadonlyContentModelBlockGroup
) {
const listIndex = parent.blocks.indexOf(listItem);
for (let i = listIndex - 1; i >= 0; i--) {
const block = parent.blocks[i];
if (
isBlockGroupOfType<ContentModelListItem>(block, 'ListItem') &&
block.levels.length == 1 &&
isSelected(block)
) {
const firstItem = findListItemsInSameThread(model, block)[0];
return isSelected(firstItem);
}
if (!isBlockGroupOfType<ContentModelListItem>(block, 'ListItem')) {
return false;
}
}
return false;
}
function calculateMarginValue(
format: Readonly<ContentModelBlockFormat>,
isIndent: boolean,
Ilength: number = IndentStepInPixel
): number | null {
const { marginLeft, marginRight, direction } = format;
const isRtl = direction == 'rtl';
const originalValue = parseValueWithUnit(isRtl ? marginRight : marginLeft);
let newValue = (isIndent ? Math.ceil : Math.floor)(originalValue / length) * length;
if (newValue == originalValue) {
newValue = Math.max(newValue + length * (isIndent ? 1 : -1), 0);
}
if (newValue == originalValue) {
// Return null to let caller know nothing is changed
return null;
} else {
return newValue;
}
}
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