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* @fileoverview Leaf node represent a content element on the document and could
* not contains children node.
* @author Dmytro Antonenko <dmitry.antonenko@pubwebkit.com>
*/
import {APPLICABLE_AREA, BaseNodeStyle} from '../style/node/base_node_style.js';
import {BranchNode} from './branch_node.js';
import {ContentRenderingReadyEvent} from './content_rendering_ready_event.js';
import {Content} from './content.js';
import {DEFAULT_INDENT_STEP} from '../style/node/indent_node_style.js';
import {DEFAULT_WIDTH_VALUE} from '../style/node/width_node_style.js';
import {DIRECTIONS, GRANULARITY} from '../base.js';
import {LeafNodeModel, NodeModel, NodeStylesModel} from '../typedefs.js';
import {Line} from './line.js';
import {NodeOffsetInfo} from '../range/node_offset_info.js';
import {NodeRange} from '../range/node_range.js';
import {NodeStyle} from '../style/node/node_style.js';
import {Node} from './node.js';
import {OffsetWordInfo} from './types/offset_word_info.js';
import {RangeOffset} from '../range/range_offset.js';
import {Range} from '../range/range.js';
import {RuntimeTextStylesConfiguration} from '../text/runtime_text_styles_configuration.js';
import {env} from '../env.js';
goog.declareModuleId('pwk.content.LeafNode');
// TODO(banguit): Implement RTL and LTR directions support.
// Review tools under goog.i18n.bidi.
const Rect = goog.require('goog.math.Rect');
const TagName = goog.require('goog.dom.TagName');
const array = goog.require('goog.array');
const object = goog.require('goog.object');
const style = goog.require('goog.style');
const {assert} = goog.require('goog.asserts');
const {TextStyle} = goog.requireType('pwk.style.text.TextStyle');
/**
* A word separator used to split text into parts.
* @type {!RegExp}
*/
const WORDS_SEPARATOR = /(\s+|[.,:;!?\[\]{}<>/\\‚„…|@#%§¶*+=^~ˆ•–—˜¦¨¬¯±·])/;
/**
* @extends {Node}
*/
export class LeafNode extends Node {
/**
* @param {!Content} content Node text content.
*/
constructor(content) {
super();
/**
* @const {!Content}
* @protected
*/
this.content_ = content;
/**
* Node selection range information.
* @type {?NodeRange}
* @protected
*/
this.selectionRange_ = null;
/**
* Indicates if extra selection added in the end of the node.
* @type {boolean}
* @protected
*/
this.extraSelection_ = false;
/**
* Runtime text styles configuration.
* @const {!RuntimeTextStylesConfiguration}
* @private
*/
this.runtimeTextStylesConfiguration_ = RuntimeTextStylesConfiguration.getInstance();
}
/** @override */
enterDocument() {
super.enterDocument();
this.dispatchEvent(new ContentRenderingReadyEvent(this));
}
/** @override */
exitDocument() {
super.exitDocument();
this.unselect();
this.extraSelection_ = false;
}
/**
* Indicates whether any content in this node.
* @return {boolean}
* @override
*/
hasContent() {
return this.content_.hasContent();
}
/**
* (Re-)Render node content.
* @param {number=} opt_startLineIndex Line to start render content.
* @override
*/
renderContent(opt_startLineIndex = 0) {
const selectionRange = this.selectionRange_;
let selectionStart;
let selectionEnd;
// If node selected, remove selection before rendering.
if (selectionRange) {
selectionStart = selectionRange.getStartOffset().getNodeOffset();
selectionEnd = selectionRange.getEndOffset().getNodeOffset();
this.unselect();
}
// Set node styles
this.setNodeStyles_();
// Render content
const content = this.content_;
const maxContentWidth = this.getWidth();
if (content.hasContent()) {
const linesOfContent = content.fragmentText(maxContentWidth);
const lastModifiedLineIndex = Math.max(opt_startLineIndex - 1, 0);
// Update lines content / add new lines.
for (let i = lastModifiedLineIndex, l = linesOfContent.length; i < l; i++) {
let lineByIndex = /** @type {!Line} */(this.getChildAt(i));
if (lineByIndex) {
lineByIndex.setContent(linesOfContent[i]);
} else {
let line = new Line(linesOfContent[i]);
this.addChildAt(line, i, true);
}
}
// Remove remaining extra lines below updated content.
let linesCount = this.getChildCount();
let fragmentsCount = linesOfContent.length;
for (let i = linesCount - 1, l = fragmentsCount - 1; i > l; i--) {
this.removeChildAt(i, true);
}
} else {
this.removeChildren(true);
this.addChild(new Line(content), true);
}
// Update selection if node was selected before.
if (selectionRange) {
this.select(selectionStart, selectionEnd);
}
}
/**
* Sets leaf and parent branch nodes styles
* @param {!Element=} opt_element Optional element to apply styles
* @protected
*/
setNodeStyles_(opt_element) {
// TODO: Add check if styles already set, then avoid update
const element = opt_element || this.getElement();
const nodeStyles = BaseNodeStyle.getStylesheetsMapFor(
env['nodeStyles'], this.content_.getNodeStyles(), APPLICABLE_AREA.LEAF_NODE, this.getNodeType());
style.setStyle(element, nodeStyles);
}
/**
* Gets node content length.
* @return {number}
* @override
*/
getLength() {
return this.content_.getLength();
}
/**
* Gets node content.
* @return {!Content}
* @override
*/
getContent() {
return this.content_;
}
/**
* Gets node styles in offset. This method returns the same information as
* {@link Content#getNodeStyles}, but required to get aggregated node styles for complex nodes
* like {@link BranchNode}
* @param {number=} opt_startOffset Optional zero-based offset at which to begin extraction.
* @param {number=} opt_endOffset Optional zero-based offset before which to end extraction.
* @return {!NodeStylesModel}
* @override
*/
getNodeStyles(opt_startOffset, opt_endOffset) {
return this.getContent().getNodeStyles();
}
/**
* Extracts a section of a node content.
* @param {number} startOffset The zero-based offset at which to begin
* extraction. If negative, it is treated as nodeContentLength + startOffset
* where nodeContentLength is the length of the node content (for example,
* if startOffset is -3 it is treated as nodeContentLength - 3). If
* startOffset is greater than or equal to the length of the node content,
* getContentAt() returns empty result.
* @param {number=} opt_endOffset Optional zero-based offset before which to
* end extraction. The character at this offset will not be included. If
* opt_endOffset is omitted, getContentAt() extracts to the end of the
* string. If negative, it is treated as nodeContentLength + opt_endOffset
* where nodeContentLength is the length of the node content (for example, if
* opt_endOffset is -3 it is treated as nodeContentLength - 3).
* @return {!Content}
* @override
*/
getContentAt(startOffset, opt_endOffset) {
return this.content_.getContentAt(startOffset, opt_endOffset);
}
/**
* Modifies text styles in the offset using given function. Apply style with the provided configuration
* in case if style is not defined in the given offset and there no styles to clean based on stylePreprocessor result.
* @param {number} startOffset The zero-based offset at which to begin
* extraction. If negative, it is treated as nodeContentLength + startOffset
* where nodeContentLength is the length of the node content (for example,
* if startOffset is -3 it is treated as nodeContentLength - 3). If
* startOffset is greater than or equal to the length of the node content,
* getContentAt() returns empty result.
* @param {number|undefined} endOffset Optional zero-based offset before which to
* end extraction. The character at this offset will not be included. If
* opt_endOffset is omitted, getContentAt() extracts to the end of the
* string. If negative, it is treated as nodeContentLength + opt_endOffset
* where nodeContentLength is the length of the node content (for example, if
* opt_endOffset is -3 it is treated as nodeContentLength - 3).
* @param {!TextStyle} textStyle Text style name.
* @param {!Object<string, !Object>} configuration Configuration object.
* @param {function(
* !Object<string, !Object>,
* !Object<string, !*>,
* !Content,
* !Object=):!Object<string, !Object>=} stylePreprocessor
* Optional preprocessor function to apply for each text style for each
* node content. Should return new configuration object which will be
* applied to content rage.
* - 1st argument: passed configuration;
* - 2nd argument: inline style configuration for selected range in the
* current node;
* - 3rg argument: current content metadata instance;
* - 4th argument: optional data object;
* @param {!Object=} opt_data Optional data object to pass to
* opt_stylePreprocessor function.
* @param {!Object=} opt_thisArg Object that should be used by default for
* opt_stylePreprocessor function calls. Current metadata instance will
* used by default.
* @override
*/
modifyTextStylesAndUpdate(startOffset, endOffset, textStyle, configuration, stylePreprocessor, opt_data, opt_thisArg) {
const contentInOffset = this.getContentAt(startOffset, endOffset);
const context = opt_thisArg || contentInOffset;
let newConfig;
// If node is empty, update default styles.
if (!this.hasContent()) {
const inlineStyles = /** @type {!Object<string, !*>} */ (this.getContent().getDefaultStyles()[textStyle]);
newConfig = stylePreprocessor.call(context, configuration, inlineStyles, contentInOffset, opt_data);
if (newConfig !== null) {
this.applyTextStyle(textStyle, newConfig, startOffset, endOffset);
} else E{
this.clearTextStyles(textStyle, startOffset, endOffset);
}
} else {
const inlineStyles = contentInOffset.getTextStyles();
const stylesToUpdate = [];
const /** @type {!Array<{startOffset: number, endOffset: number}>} */ stylesOffsetsToClean = [];
const length = contentInOffset.getLength();
const range = new Array(length).fill(false);
const inlineStylesLength = inlineStyles[textStyle]?.length ?? 0;
// Modify styles
for (let i = 0; i < inlineStylesLength; i++) {
const inlineStyle = inlineStyles[textStyle][i];
const offsetsCount = inlineStyle['offsets'].length;
newConfig = stylePreprocessor.call(context, configuration, inlineStyle, contentInOffset, opt_data);
for (let j = 0; j < offsetsCount; j++) {
const offset = inlineStyle['offsets'][j];
const start = startOffset + offset['start'];
const end = startOffset + offset['end'];
Iif (newConfig === null) {
stylesOffsetsToClean.push({
startOffset: start,
endOffset: end
});
} else {
stylesToUpdate.push({
textStyle: textStyle,
configuration: newConfig,
startOffset: start,
endOffset: end,
});
}
// Update offset range array
range.fill(true, offset['start'], offset['end']);
}
}
// Apply styles
for (let i = 0, start = null, end = null; i <= length; i++) {
Iif (start === null && range[i] === false) {
start = i;
}
Iif (range[i] === false) {
end = i;
}
Iif ((i === length || range[i] === true) && start !== null && end !== null) {
stylesToUpdate.push({
configuration,
textStyle: textStyle,
startOffset: startOffset + start,
endOffset: startOffset + end + 1,
});
start = null;
end = null;
}
}
// Clear styles
for (let i = 0; i < stylesOffsetsToClean.length; i++) {
const offset = stylesOffsetsToClean[i];
this.clearTextStyles(textStyle, offset.startOffset, offset.endOffset);
}
this.applyTextStyles(stylesToUpdate);
}
}
/**
* Gets detailed offset information.
* @param {number} offset 0-based node offset.
* @param {boolean=} opt_considerEndOfLineOffset Consider end of line offset
* as valid result.
* @return {?NodeOffsetInfo}
*/
getOffsetInfo(offset, opt_considerEndOfLineOffset) {
let result = null;
let totalLength = 0;
if (offset >= 0) {
this.forEachChild((line, index) => {
if (result === null) {
let lineLength = line.getContent().getLength();
totalLength += lineLength;
if (totalLength >= offset) {
// Set first line position of the line below if it is last position
// of the loop line.
if (totalLength === offset &&
this.getChildAt(index + 1) != null &&
!opt_considerEndOfLineOffset) {
let lineBelow = /** @type {!Line} */(this.getChildAt(index + 1));
result = new NodeOffsetInfo(this, lineBelow, index + 1, 0, offset);
} else {
let lineOffset = lineLength - (totalLength - offset);
result = new NodeOffsetInfo(this, line, index, lineOffset, offset);
}
}
}
});
}
return result;
}
/**
* Gets detailed range offset information to the specified x coordinate and
* the specified y coordinate.
* @param {number} x Horizontal coordinate within the application client area.
* @param {number} y Vertical coordinate within the application client area.
* @return {?RangeOffset}
* @override
*/
getRangeOffsetFromPoint(x, y) {
let nodeBounds = style.getBounds(this.getElement());
let innerY = Math.min(Math.max(y - nodeBounds.top, 0), nodeBounds.height);
let searchYCoordinate = nodeBounds.top + innerY;
let startLineIndex = 0;
let endLineIndex = this.getChildCount() - 1;
// Get line in the offset.
/** @type {number} */
let loopIndex;
/** @type {!Line} */
let loopLine;
let loopBounds;
while (startLineIndex <= endLineIndex) {
loopIndex = Math.floor((startLineIndex + endLineIndex) / 2);
loopLine = /** @type {!Line} */(this.getChildAt(loopIndex));
loopBounds = style.getBounds(loopLine.getElement());
if (searchYCoordinate >= loopBounds.top &&
searchYCoordinate <= loopBounds.top + loopBounds.height) {
break;
} else if (loopBounds.top < searchYCoordinate) {
startLineIndex = loopIndex + 1;
} else {
endLineIndex = loopIndex - 1;
}
}
return this.getLineRangeOffset_(loopLine, loopIndex, x);
}
/**
* Gets detailed range offset information for specific offset.
* @param {number} offset 0-based node offset.
* @param {boolean=} opt_considerEndOfLineOffset Consider end of line offset as valid result.
* @return {?RangeOffset}
* @override
*/
getRangeOffsetForOffset(offset, opt_considerEndOfLineOffset) {
const nodeOffsetInfo = this.getOffsetInfo(offset, opt_considerEndOfLineOffset);
let rangeOffset = null;
if (nodeOffsetInfo !== null) {
rangeOffset =
this.getLineRangeOffsetInternal_(nodeOffsetInfo.getLine(), nodeOffsetInfo.getLineOffset(), nodeOffsetInfo);
}
return rangeOffset;
}
/**
* Gets line range offset.
* @param {!Line} line
* @param {number} lineOffset
* @param {!NodeOffsetInfo} nodeOffsetInfo
* @return {!RangeOffset}
* @private
*/
getLineRangeOffsetInternal_(line, lineOffset, nodeOffsetInfo) {
const lineContent = line.getContent();
const lineContentElement = line.getContentRootElement();
const offsetWidth = lineContent.getOffsetWidth(0, lineOffset);
const offsetWidthDelta = lineContent.getOffsetWidth(0, lineOffset + 1);
let totalWidth = 0;
let closestSpanForOffset =
array.find(lineContentElement.childNodes, (child) => {
totalWidth += (/** @type {!HTMLElement} */(child)).offsetWidth;
return Math.floor(offsetWidth) <=
totalWidth + ((offsetWidthDelta - offsetWidth) / 2);
}) || lineContentElement.lastChild;
// Let's check the internal content, and if this is the only element, let's use it
while (closestSpanForOffset.childNodes.length === 1 &&
closestSpanForOffset.childNodes[0].nodeType === window.Node.ELEMENT_NODE) {
closestSpanForOffset = closestSpanForOffset.childNodes[0];
}
const closestSpanForOffsetBounds = style.getBounds((/** @type {!Element} */(closestSpanForOffset)));
const nodeBounds = style.getBounds(this.getElement());
const offsetX = line.getXForOffset(lineOffset);
const offsetY = closestSpanForOffsetBounds.top - nodeBounds.top;
const offsetBounds = new Rect(offsetX, offsetY, 0, closestSpanForOffsetBounds.height);
return new RangeOffset(this, nodeOffsetInfo, offsetBounds);
}
/**
* Gets range offset around given offset in the specified direction and
* distance.
* @param {number} offset 0-based node offset.
* @param {!DIRECTIONS} direction The direction in which to adjust the offset.
* @param {!GRANULARITY} granularity The distance to adjust the offset. Only
* pwk.GRANULARITY.CHAR an pwk.GRANULARITY.WORD accepted.
* @return {?RangeOffset}
* @override
*/
getRangeOffsetAround(offset, direction, granularity) {
const length = this.getLength();
assert(
[GRANULARITY.CHAR, GRANULARITY.WORD].indexOf(granularity) !== -1,
'Only granularity pwk.GRANULARITY.CHAR and pwk.GRANULARITY.WORD ' +
'supported.');
if (length > 0 && offset >= 0 && offset <= length) {
switch (granularity) {
case GRANULARITY.CHAR:
offset += direction === DIRECTIONS.BACKWARD ? -1 : 1;
break;
case GRANULARITY.WORD:
const content = this.getContent();
const wordsMap = content.getWordsWidthsMap(WORDS_SEPARATOR);
const wordsCount = wordsMap.length;
const lastWordIndex = wordsCount - 1;
const isEndOfNode = wordsMap[lastWordIndex].endOffset === offset;
const mapIndex =
isEndOfNode ?
wordsCount :
array.binarySearch(wordsMap, offset, (target, value) => {
if (target >= value.startOffset &&
target < value.endOffset) {
return 0;
} else if (target < value.startOffset) {
return -1;
}
return 1;
});
if (direction === DIRECTIONS.BACKWARD) {
const currentWord = wordsMap[mapIndex];
// Move cursor to the beginning of the current node or to the end of
// the previous word
if (!currentWord || currentWord.startOffset === offset) {
offset = wordsMap[Math.max(mapIndex - 1, 0)].startOffset;
} else {
offset = currentWord.startOffset;
}
} else {
offset =
mapIndex + 1 < wordsCount ?
wordsMap[mapIndex + 1].startOffset :
wordsMap[lastWordIndex].endOffset;
}
break;
}
} else {
offset = 0;
}
return this.getRangeOffsetForOffset(offset);
}
/**
* Gets range of the word in the specified x coordinate and the specified y
* coordinate.
* @param {number} offset 0-based node offset.
* @return {?Range}
* @override
*/
getWordRangeOffsetFromOffset(offset) {
const content = this.getContent();
const wordsMap = content.getWordsWidthsMap(WORDS_SEPARATOR);
const mapIndex =
array.binarySearch(wordsMap, offset, (target, value) => {
if (target >= value.startOffset && target < value.endOffset) {
return 0;
} else if (target < value.startOffset) {
return -1;
}
return 1;
});
if (mapIndex >= 0) {
const wordOffsets = wordsMap[mapIndex];
return new Range(
/** @type {!RangeOffset} */
(this.getRangeOffsetForOffset(wordOffsets.startOffset)),
/** @type {!RangeOffset} */
(this.getRangeOffsetForOffset(wordOffsets.endOffset)));
}
return null;
}
/**
* Get words around offset.
* @param {number} offset 0-based node offset
* @return {?OffsetWordInfo}
* @override
*/
getWordsInformationAroundOffset(offset) {
let wordInfo = null;
let offsetPosition = 0;
let offsetDelta = 0;
const content = this.getContent();
const wordsMap = content.getWordsWidthsMap(WORDS_SEPARATOR, false);
const mapIndex =
array.binarySearch(wordsMap, offset, (target, value) => {
if (target >= value.startOffset && target <= value.endOffset) {
offsetDelta = value.endOffset - target;
return 0;
} else if (target < value.startOffset) {
return -1;
}
return 1;
});
if (mapIndex >= 0) {
// Get last 3 words
const words = [];
for (let i = 0; i <= 2 && mapIndex - i >= 0; i++) {
words.unshift(wordsMap[mapIndex - i]);
}
const additionalWord = wordsMap[mapIndex + 1];
if (additionalWord) {
words.push(additionalWord);
offsetDelta += additionalWord.endOffset - additionalWord.startOffset;
}
const firstWordOffsets = words[0];
const lastWordOffsets = words[words.length - 1];
const textContent = content.getContentAt(firstWordOffsets.startOffset, lastWordOffsets.endOffset);
offsetPosition = textContent.getLength() - offsetDelta;
const range = new Range(
/** @type {!RangeOffset} */
(this.getRangeOffsetForOffset(firstWordOffsets.startOffset)),
/** @type {!RangeOffset} */
(this.getRangeOffsetForOffset(lastWordOffsets.endOffset)));
wordInfo = new OffsetWordInfo(textContent, range, offsetPosition);
}
return wordInfo;
}
/**
* Gets position above of given offset. If given position is top of the node,
* return `undefined`.
* @param {!RangeOffset} startOffset Origin offset to search.
* @param {number} x X axis position to align.
* @return {!RangeOffset|undefined} New offset above or undefined.
* @override
*/
getOffsetAbove(startOffset, x) {
const lineIndex = startOffset.getNodeOffsetInfo().getLineIndex();
let newOffset;
if (lineIndex !== 0) {
const newOffsetLine = /** @type {!Line} */(this.getChildAt(lineIndex - 1));
const newOffsetLineBounds = style.getBounds(newOffsetLine.getElement());
const y = newOffsetLineBounds.top + (newOffsetLineBounds.height / 2);
newOffset = /** @type {!RangeOffset} */(this.getRangeOffsetFromPoint(x, y));
}
return newOffset;
}
/**
* Gets position below of given offset. If given position is bottom of the
* node, return `undefined`.
* @param {!RangeOffset} startOffset Origin offset to search.
* @param {number} x X axis position to align.
* @return {!RangeOffset|undefined} New offset below or undefined.
* @override
*/
getOffsetBelow(startOffset, x) {
const lineIndex = startOffset.getNodeOffsetInfo().getLineIndex();
const linesCount = this.getChildCount();
const lastLineIndex = linesCount - 1;
let newOffset;
if (lineIndex !== lastLineIndex) {
const newOffsetLine = /** @type {!Line} */(this.getChildAt(lineIndex + 1));
const newOffsetLineBounds = style.getBounds(newOffsetLine.getElement());
const y = newOffsetLineBounds.top + (newOffsetLineBounds.height / 2);
newOffset = /** @type {!RangeOffset} */(this.getRangeOffsetFromPoint(x, y));
}
return newOffset;
}
/**
* Gets topmost offset in the node by X axis.
* @param {number} x X axis position to align.
* @return {!RangeOffset} New offset below.
* @override
*/
getTopmostOffsetByX(x) {
const firstLineIndex = 0;
const firstLine = /** @type {!Line} */(this.getChildAt(firstLineIndex));
return this.getLineRangeOffset_(firstLine, firstLineIndex, x);
}
/**
* Gets bottommost offset in the node by X axis.
* @param {number} x X axis position to align.
* @return {!RangeOffset} New offset below.
* @override
*/
getBottommostOffsetByX(x) {
const linesCount = this.getChildCount();
const lastLineIndex = linesCount - 1;
const lastLine = /** @type {!Line} */(this.getChildAt(lastLineIndex));
return this.getLineRangeOffset_(lastLine, lastLineIndex, x);
}
/**
* Gets line range offset.
* @param {!Line} line
* @param {number} lineIndex
* @param {number} x X axis position to align.
* @return {!RangeOffset} Line range offset.
* @private
*/
getLineRangeOffset_(line, lineIndex, x) {
const loopLineContentBounds = style.getBounds(line.getElement());
const innerX = Math.max(x - loopLineContentBounds.left, 0);
const lineOffset = line.getOffsetByX(innerX);
let nodeOffset = 0;
/** @type {!NodeOffsetInfo} */
let nodeOffsetInfo;
for (let i = 0; i <= lineIndex; i++) {
if (i === lineIndex) {
nodeOffsetInfo = new NodeOffsetInfo(this, line, i, lineOffset, nodeOffset + lineOffset);
break;
} else {
let line = /** @type {!Line} */(this.getChildAt(i));
nodeOffset += line.getContent().getLength();
}
}
return this.getLineRangeOffsetInternal_(line, lineOffset, nodeOffsetInfo);
}
/**
* Inserts text at the given position.
* @param {!Content} content The content to insert.
* @param {number} offset The offset to insert text. Can't be negative.
* Represents symbol position in the text.
* @override
*/
insertContentAt(content, offset) {
const offsetInfo = this.getOffsetInfo(offset);
this.getContent().insertContentAt(content, offset);
// Re-render content
this.unselect();
this.dispatchEvent(new ContentRenderingReadyEvent(this, offsetInfo.getLineIndex()));
}
/**
* Appends text.
* @param {!Content} content The content to append.
* @override
*/
appendText(content) {
const lastLineIndex = this.getChildCount() - 1;
this.getContent().appendText(content);
// Re-render content
this.unselect();
this.dispatchEvent(new ContentRenderingReadyEvent(this, lastLineIndex > 0 ? lastLineIndex : 0));
}
/**
* Removes specified range of the node content.
* @param {number} startOffset Zero-based offset at which to begin removing.
* @param {number=} opt_endOffset Optional zero-based offset before which to end removing.
* @param {?Range=} opt_currentSelectionRange Optional current selection range.
* @override
*/
removeAt(startOffset, opt_endOffset, opt_currentSelectionRange) {
const offsetInfo = this.getOffsetInfo(startOffset);
this.getContent().removeAt(startOffset, opt_endOffset);
// Re-render content
this.unselect();
this.dispatchEvent(new ContentRenderingReadyEvent(this, offsetInfo.getLineIndex()));
}
/**
* Apply text styles for content in given offsets and re-render node content.
* The styles will be applied in the order provided in the array.
* @param {!Array<{
* textStyle: !TextStyle,
* configuration: !Object<string, !Object>,
* startOffset: number,
* endOffset: number
* }>} styles
* @override
*/
applyTextStyles(styles) {
if (styles.length > 0) {
let minUpdatedOffset = styles[0].startOffset;
styles.forEach((style) => {
this.content_.addTextStyle(style.textStyle, style.configuration, style.startOffset, style.endOffset);
minUpdatedOffset = Math.min(minUpdatedOffset, style.startOffset);
});
// Re-render content
const offsetInfo = this.getOffsetInfo(minUpdatedOffset);
this.dispatchEvent(new ContentRenderingReadyEvent(this, offsetInfo.getLineIndex()));
}
}
/**
* Apply text style for content in offset and re-render node content.
* @param {!TextStyle} textStyle Text style name.
* @param {!Object<string, !Object>} configuration Configuration object.
* @param {number=} opt_startOffset Optional zero-based offset where to apply
* text formatting. If opt_startOffset is omitted, the style will be
* applied from the start of the node content.
* @param {number=} opt_endOffset Optional zero-based offset where to apply
* text formatting. If opt_endOffset is omitted, the style will be applied
* to the end of the node content.
* @override
*/
applyTextStyle(textStyle, configuration, opt_startOffset, opt_endOffset) {
this.content_.addTextStyle(textStyle, configuration, opt_startOffset, opt_endOffset);
// Re-render content
const lineIndex = opt_startOffset ? this.getOffsetInfo(opt_startOffset).getLineIndex() : 0;
this.dispatchEvent(new ContentRenderingReadyEvent(this, lineIndex));
}
/**
* Clears text style in the specific offset.
* @param {!TextStyle} textStyle Text style name. Should equal to style name
* registered in the global registry {@link pwk.env}.
* @param {number=} opt_startOffset Optional zero-based offset where to apply
* text formatting. If opt_startOffset is omitted, the style will be
* applied from the start of the node content.
* @param {number=} opt_endOffset Optional zero-based offset where to apply
* text formatting. If opt_endOffset is omitted, the style will be applied
* to the end of the node content.
* @override
*/
clearTextStyles(textStyle, opt_startOffset, opt_endOffset) {
this.content_.clearTextStyles(opt_startOffset, opt_endOffset, textStyle);
// Re-render content
const lineIndex = opt_startOffset ? this.getOffsetInfo(opt_startOffset).getLineIndex() : 0;
this.dispatchEvent(new ContentRenderingReadyEvent(this, lineIndex));
}
/**
* Apply node style and re-render node content.
* @param {!NodeStyle} nodeStyle Node style.
* @param {?Object|string|number} configuration Configuration object.
* @override
*/
applyNodeStyle(nodeStyle, configuration) {
const content = this.content_;
const currentConfiguration = content.getNodeStyle(nodeStyle);
const isConfigurationChanged =
goog.isObject(currentConfiguration) ?
!object.equals(currentConfiguration, /** @type {!Object} */(configuration)) :
currentConfiguration !== configuration;
if (isConfigurationChanged) {
this.content_.setNodeStyle(nodeStyle, configuration);
const selectionRange = this.selectionRange_;
let selectionStart;
let selectionEnd;
// If node selected, remove selection before rendering.
if (selectionRange) {
selectionStart = selectionRange.getStartOffset().getNodeOffset();
selectionEnd = selectionRange.getEndOffset().getNodeOffset();
this.unselect();
}
// Re-render content
this.dispatchEvent(new ContentRenderingReadyEvent(this));
// Update selection in node was selected before.
if (selectionRange) {
this.select(selectionStart, selectionEnd);
}
}
}
/**
* Cuts the specified range of the node content.
* @param {number} startOffset Zero-based offset at which to begin
* cut. If negative, it is treated as lineContentLength + startOffset
* where lineContentLength is the length of the line content (for example,
* if opt_startOffset is -3 it is treated as lineContentLength - 3). If
* startOffset is greater than or equal to the length of the line
* content, cut() returns an empty string.
* @param {number=} opt_endOffset Optional zero-based offset before which to
* end cut. The character at this offset will not be included. If
* opt_endOffset is omitted, cut() cuts to the end of the string.
* If negative, it is treated as lineContentLength + opt_endOffset where
* lineContentLength is the length of the line content (for example, if
* opt_endOffset is -3 it is treated as lineContentLength - 3).
* @return {!Content}
*/
cut(startOffset, opt_endOffset) {
const offsetInfo = this.getOffsetInfo(startOffset);
const cuttedContent = this.content_.cut(startOffset, opt_endOffset);
// Re-render content
this.unselect();
this.dispatchEvent(new ContentRenderingReadyEvent(this, offsetInfo.getLineIndex()));
return cuttedContent;
}
/**
* Make a selection of node content.
* @param {number=} opt_startOffset Optional selection start offset.
* @param {number=} opt_endOffset Optional selection end offset.
* @param {boolean=} opt_addExtraSpace Indicates if required to add extra space in the end of the node.
* @param {boolean=} opt_isDocumentSelectionCollapsed Indicates if document selection is collapsed.
* @override
*/
select(opt_startOffset = 0, opt_endOffset = this.getLength(), opt_addExtraSpace, opt_isDocumentSelectionCollapsed) {
this.unselect();
const totalLength = this.getLength();
const startLineOffset = this.getOffsetInfo(opt_startOffset);
const endLineOffset = this.getOffsetInfo(opt_endOffset);
const startLineIndex = startLineOffset.getLineIndex();
const endLineIndex = endLineOffset.getLineIndex();
let loopLine;
for (let i = startLineIndex, l = endLineIndex; i <= l; i++) {
loopLine = /** @type {!Line} */(this.getChildAt(i));
if (i === endLineIndex &&
(opt_addExtraSpace || (totalLength === 0 && !opt_isDocumentSelectionCollapsed))) {
this.extraSelection_ = true;
}
if (i === startLineIndex && i === endLineIndex) {
loopLine.select(startLineOffset.getLineOffset(), endLineOffset.getLineOffset(), this.extraSelection_);
} else if (i === startLineIndex) {
loopLine.select(startLineOffset.getLineOffset(), undefined, this.extraSelection_);
} else if (i === endLineIndex) {
loopLine.select(0, endLineOffset.getLineOffset(), this.extraSelection_);
} else {
loopLine.select(undefined, undefined, this.extraSelection_);
}
}
this.selectionRange_ = new NodeRange(
/** @type {!NodeOffsetInfo} */(startLineOffset),
/** @type {!NodeOffsetInfo} */(endLineOffset));
}
/** @override */
unselect() {
if (this.selectionRange_) {
const selectionRange = this.selectionRange_;
const startOffset = selectionRange.getStartOffset();
const endOffset = selectionRange.getEndOffset();
if (!NodeOffsetInfo.equals(startOffset, endOffset)) {
let startLineIndex = startOffset.getLineIndex();
let endLineIndex = endOffset.getLineIndex();
let loopLine;
for (let i = startLineIndex; i <= endLineIndex; i++) {
loopLine = /** @type {!Line} */(this.getChildAt(i));
loopLine.unselect();
}
}
this.selectionRange_ = null;
}
if (this.extraSelection_) {
const lastLine = /** @type {!Line} */(this.getChildAt(this.getChildCount() - 1));
lastLine.unselect();
this.extraSelection_ = false;
}
}
/**
* Identifies whether node is selected entirely.
* @return {boolean}
* @override
*/
isSelectedEntirely() {
const selectionRange = this.selectionRange_;
return selectionRange != null &&
selectionRange.getStartOffset().getNodeOffset() === 0 &&
selectionRange.getEndOffset().getNodeOffset() === this.getLength();
}
/**
* Gets selected content.
* @return {?Content}
* @override
*/
getSelectedContent() {
let selectedContent = null;
const selectionRange = this.selectionRange_;
if (selectionRange != null) {
const startOffset = selectionRange.getStartOffset().getNodeOffset();
const endOffset = selectionRange.getEndOffset().getNodeOffset();
selectedContent = this.content_.getContentAt(startOffset, endOffset);
}
return selectedContent;
}
/**
* Gets node selection range.
* @return {?NodeRange}
* @override
*/
getSelectionRange() {
return this.selectionRange_;
}
/**
* Gets html representation of the node selection. Use
* Node.getContent().toHtmlString() if you need to obtain the HTML
* representation of the content without considering node HTML structure.
* @param {number} startOffset The zero-based offset at which to begin
* extraction. If negative, it is treated as lineContentLength + startOffset
* where lineContentLength is the length of the line content (for example,
* if startOffset is -3 it is treated as lineContentLength - 3). If
* startOffset is greater than or equal to the length of the line content,
* getContentAt() returns empty result.
* @param {number=} opt_endOffset Optional zero-based offset before which to
* end extraction. The character at this offset will not be included. If
* opt_endOffset is omitted, getContentAt() extracts to the end of the
* string. If negative, it is treated as lineContentLength + opt_endOffset
* where lineContentLength is the length of the line content (for example, if
* opt_endOffset is -3 it is treated as lineContentLength - 3).
* @return {string} HTML string
* @override
*/
getOuterHtml(startOffset, opt_endOffset) {
const element = this.dom_.createElement(TagName.DIV);
const contentRange = this.getContent().getContentAt(startOffset, opt_endOffset);
element.innerHTML = contentRange.toHtmlString();
this.setNodeStyles_(element);
return element.outerHTML;
}
/**
* Gets component default css class.
* @return {string} Base CSS class for this component.
* @override
*/
getCssClass() {
return LeafNode.CSS_CLASS;
}
/**
* Gets model object.
* @param {boolean=} selectedContentOnly If true, returns model object for
* selected content only.
* @return {!NodeModel}
* @override
*/
toModel(selectedContentOnly) {
const model = new LeafNodeModel();
model.nodeType = this.getNodeType();
model.content = selectedContentOnly ? this.getSelectedContent().toModel() : this.content_.toModel();
return model;
}
/**
* Converts current node content to plain text.
* @param {number=} opt_startOffset Optional zero-based offset at which to begin extraction.
* @param {number=} opt_endOffset Optional zero-based offset before which to end extraction.
* @return {string}
* @override
*/
toPlainText(opt_startOffset = 0, opt_endOffset = this.getLength()) {
return this.getContentAt(opt_startOffset, opt_endOffset).getText();
}
/**
* Increase indentation. Offsets is useful for BranchNode components.
* @param {number=} opt_startOffset
* @param {number=} opt_endOffset
* @return {boolean} Whether indent increased successfully
* @override
*/
increaseIndent(opt_startOffset = 0, opt_endOffset = this.getLength()) {
const content = this.getContent();
const nodeStyles = content.getNodeStyles();
const currentIndent = nodeStyles.indent ?? 0;
const currentWidth = this.getWidth();
if (currentWidth - DEFAULT_INDENT_STEP > DEFAULT_INDENT_STEP) {
this.unselect(); // node should be unselected to avoid problems with selection outside
this.getContent().setNodeStyle(NodeStyle.INDENT, currentIndent + DEFAULT_INDENT_STEP);
this.dispatchEvent(new ContentRenderingReadyEvent(this));
return true;
}
return false;
}
/**
* Decreases indentation. Offsets is useful for BranchNode components.
* @param {number=} opt_startOffset
* @param {number=} opt_endOffset
* @return {boolean} Whether indent increased successfully
* @override
*/
decreaseIndent(opt_startOffset = 0, opt_endOffset = this.getLength()) {
const content = this.getContent();
const nodeStyles = content.getNodeStyles();
const currentIndent = nodeStyles.indent ?? 0;
if (currentIndent > 0) {
this.unselect(); // node should be unselected to avoid problems with selection outside
content.setNodeStyle(NodeStyle.INDENT, Math.max(currentIndent - DEFAULT_INDENT_STEP, 0));
this.dispatchEvent(new ContentRenderingReadyEvent(this));
return true;
}
return false;
}
/**
* Gets content height.
* @return {number}
* @override
*/
getHeight() {
const content = this.content_;
let height = 0;
if (content.hasContent()) {
const lines = content.fragmentText(this.getWidth());
for (let i = 0; i < lines.length; i++) {
height += lines[i].getHeight();
}
} else {
const sizeMap = content.getCharsSizeMap();
for (let i = 0; i < sizeMap.length; i++) {
height += sizeMap[i].height;
}
}
// TODO: Add branch styles check, which node affect height
return height;
}
/**
* Gets component width in pixels.
* @return {number}
* @override
*/
getWidth() {
let width = 0;
const parent = /** @type {!BranchNode|null} */(this.getParent());
if (parent instanceof BranchNode) {
const parentWidth = parent.getBranchNodeStyles().width;
const parentIndent = parent.getBranchNodeStyles().indent ?? 0;
width += parentWidth !== DEFAULT_WIDTH_VALUE ? /** @type {number} */(parentWidth) : parent.getWidth();
width -= parentIndent;
} else {
const documentSettings = this.runtimeTextStylesConfiguration_.getDocumentSettings();
width += documentSettings?.getPageWidthPixel() ?? 0;
}
width -= this.getNodeStyles().indent ?? 0;
return width;
}
/**
* @override
* Should be overridden by derived class.
*/
getNodeType() {
throw new Error('getNodeType method not implemented');
}
/**
* Splits node. Returns second part of node as a result.
* Should be overridden by derived class.
* @param {!NodeOffsetInfo} nodeOffsetInfo
* @return {!Node} Node to render below current node.
* @override
*/
split(nodeOffsetInfo) {
throw new Error('split method not implemented');
}
}
/**
* Component default css class.
* @type {string}
* @override
*/
LeafNode.CSS_CLASS = 'pwk-leaf-node';
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