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import { Type } from 'main.core';
import type { BBCodeEncoder } from 'ui.bbcode.encoder';
import { getByIndex } from '../../../shared';
import { typeof BBCodeElementNode } from './element-node';
import { typeof BBCodeTextNode } from './text-node';
import { typeof BBCodeNewLineNode } from './new-line-node';
import { typeof BBCodeTabNode } from './tab-node';
import { typeof BBCodeRootNode } from './root-node';
import { typeof BBCodeFragmentNode } from './fragment-node';
import { typeof BBCodeScheme } from '../scheme/bbcode-scheme';
import { type BBCodeNodeScheme } from '../scheme/node-schemes/node-scheme';
export type BBCodeSpecialCharNode = BBCodeNewLineNode | BBCodeTabNode;
export type BBCodeContentNode = BBCodeElementNode | BBCodeTextNode | BBCodeSpecialCharNode;
export type BBCodeParentNode = BBCodeRootNode | BBCodeElementNode | BBCodeFragmentNode;
export type BBCodeNodeOptions = {
name?: string,
parent?: BBCodeParentNode | null,
children?: Array<BBCodeContentNode | BBCodeFragmentNode>,
scheme: BBCodeScheme,
};
export type SerializedBBCodeNode = {
name: string,
children: Array<SerializedBBCodeNode>,
};
type PrivateMapKey = BBCodeNode | BBCodeContentNode | BBCodeRootNode | BBCodeFragmentNode;
type PrivateStorage = {[key: string]: any};
export const privateMap: WeakMap<PrivateMapKey, PrivateStorage> = new WeakMap();
export const nameSymbol: Symbol = Symbol('name');
export class BBCodeNode
{
[nameSymbol]: string = '#unknown';
children: Array<BBCodeContentNode | BBCodeFragmentNode> = [];
constructor(options: BBCodeNodeOptions = {})
{
privateMap.set(this, {
delayedChildren: [],
});
this.setName(options.name);
privateMap.get(this).scheme = options.scheme;
this.setParent(options.parent);
this.setChildren(options.children);
}
static get ELEMENT_NODE(): number
{
return 1;
}
static get TEXT_NODE(): number
{
return 2;
}
static get ROOT_NODE(): number
{
return 3;
}
static get FRAGMENT_NODE(): number
{
return 4;
}
static freezeProperty(node: BBCodeNode, property: string, value: any, enumerable: boolean = true)
{
Object.defineProperty(node, property, {
value,
writable: false,
configurable: false,
enumerable,
});
}
static makeNonEnumerableProperty(node: BBCodeNode, property: string)
{
Object.defineProperty(node, property, {
writable: false,
enumerable: false,
configurable: false,
});
}
static flattenChildren(children: Array<BBCodeContentNode | BBCodeFragmentNode>): Array<BBCodeContentNode>
{
if (Type.isArrayFilled(children))
{
return children.flatMap((node: BBCodeContentNode | BBCodeFragmentNode) => {
if (node.getType() === BBCodeNode.FRAGMENT_NODE)
{
return node.getChildren();
}
return node;
});
}
return [];
}
setScheme(scheme: BBCodeScheme, onUnknown: (node: BBCodeContentNode) => any)
{
privateMap.get(this).scheme = scheme;
}
getScheme(): BBCodeScheme
{
return privateMap.get(this).scheme;
}
getTagScheme(): BBCodeNodeScheme
{
return this.getScheme().getTagScheme(this.getName());
}
getEncoder(): BBCodeEncoder
{
return this.getScheme().getEncoder();
}
prepareCase(value: string): string
{
const scheme: BBCodeScheme = this.getScheme();
const currentCase = scheme.getOutputTagCase();
if (currentCase === 'upper')
{
return value.toUpperCase();
}
return value.toLowerCase();
}
setName(name: string)
{
if (Type.isString(name))
{
this[nameSymbol] = name.toLowerCase();
}
}
getName(): string
{
return this[nameSymbol];
}
getDisplayedName(): string
{
return this.prepareCase(this.getName());
}
setParent(parent: BBCodeParentNode | null = null)
{
const mounted = !this.hasParent() && parent;
privateMap.get(this).parent = parent;
if (mounted)
{
this.onNodeDidMount();
}
}
getParent(): BBCodeParentNode | null
{
return privateMap.get(this).parent;
}
getType(): number
{
return privateMap.get(this).type;
}
hasParent(): boolean
{
return Boolean(privateMap.get(this).parent);
}
remove()
{
if (this.hasParent())
{
this.getParent().removeChild(this);
}
}
setChildren(children: Array<BBCodeContentNode | BBCodeFragmentNode>)
{
if (Type.isArray(children))
{
this.children = [];
this.appendChild(...children);
}
}
getChildren(): Array<BBCodeContentNode>
{
return [...this.children];
}
getLastChild(): ?BBCodeContentNode
{
return getByIndex(this.getChildren(), -1);
}
getLastChildOfType(type: number): ?BBCodeContentNode
{
return this.getChildren().reverse().find((node: BBCodeContentNode) => {
return node.getType() === type;
});
}
getLastChildOfName(name: string): ?BBCodeContentNode
{
return this.getChildren().reverse().find((node: BBCodeContentNode) => {
return node.getType() === BBCodeNode.ELEMENT_NODE && node.getName() === name;
});
}
getFirstChild(): ?BBCodeContentNode
{
return getByIndex(this.getChildren(), 0);
}
getFirstChildOfType(type: number): ?BBCodeContentNode
{
return this.getChildren().find((node: BBCodeContentNode) => {
return node.getType() === type;
});
}
getFirstChildOfName(name: string): ?BBCodeContentNode
{
return this.getChildren().find((node: BBCodeContentNode) => {
return node.getType() === BBCodeNode.ELEMENT_NODE && node.getName() === name;
});
}
getPreviewsSibling(): ?BBCodeContentNode
{
if (this.hasParent())
{
const parentChildren: Array<BBCodeContentNode> = this.getParent().getChildren();
const currentIndex: number = parentChildren.indexOf(this);
if (currentIndex > 0)
{
return getByIndex(parentChildren, currentIndex - 1);
}
}
return null;
}
getPreviewsSiblings(): ?Array<BBCodeContentNode>
{
if (this.hasParent())
{
const parentChildren: Array<BBCodeContentNode> = this.getParent().getChildren();
const currentIndex: number = parentChildren.indexOf(this);
return parentChildren.filter((child: BBCodeContentNode, index) => {
return index < currentIndex;
});
}
return null;
}
getNextSibling(): ?BBCodeContentNode
{
if (this.hasParent())
{
const parentChildren: Array<BBCodeContentNode> = this.getParent().getChildren();
const currentIndex: number = parentChildren.indexOf(this);
if (currentIndex !== -1 && currentIndex !== parentChildren.length)
{
return getByIndex(parentChildren, currentIndex + 1);
}
}
return null;
}
getNextSiblings(): ?Array<BBCodeContentNode>
{
if (this.hasParent())
{
const parentChildren: Array<BBCodeContentNode> = this.getParent().getChildren();
const currentIndex: number = parentChildren.indexOf(this);
return parentChildren.filter((child: BBCodeContentNode, index) => {
return index > currentIndex;
});
}
return null;
}
getChildrenCount(): number
{
return this.children.length;
}
hasChildren(): boolean
{
return this.getChildrenCount() > 0;
}
isEmpty(): boolean
{
return this.getChildrenCount() === 0;
}
adjustChildren()
{
this.setChildren(this.getChildren());
}
setDelayedChildren(children: Array<BBCodeContentNode>)
{
if (Type.isArray(children))
{
privateMap.get(this).delayedChildren = children;
}
}
addDelayedChildren(children: Array<BBCodeContentNode>)
{
if (Type.isArrayFilled(children))
{
this.setDelayedChildren([
...this.getDelayedChildren(),
...children,
]);
}
}
hasDelayedChildren(): boolean
{
return privateMap.get(this).delayedChildren.length > 0;
}
getDelayedChildren(): Array<BBCodeContentNode>
{
return [...privateMap.get(this).delayedChildren];
}
appendChild(...children: Array<BBCodeContentNode | BBCodeFragmentNode>)
{
const flattenedChildren: Array<BBCodeContentNode> = BBCodeNode.flattenChildren(children);
flattenedChildren.forEach((node: BBCodeContentNode) => {
node.remove();
node.setParent(this);
this.children.push(node);
});
}
prependChild(...children: Array<BBCodeContentNode | BBCodeFragmentNode>)
{
const flattenedChildren: Array<BBCodeContentNode> = BBCodeNode.flattenChildren(children);
flattenedChildren.forEach((node: BBCodeContentNode) => {
node.remove();
node.setParent(this);
this.children.unshift(node);
});
}
insertBefore(...nodes: Array<BBCodeContentNode>)
{
if (this.hasParent() && Type.isArrayFilled(nodes))
{
const parent: BBCodeContentNode = this.getParent();
const parentChildren: Array<BBCodeContentNode> = parent.getChildren();
const currentNodeIndex: number = parentChildren.indexOf(this);
const deleteCount: number = 0;
parentChildren.splice(currentNodeIndex, deleteCount, ...nodes);
parent.setChildren(parentChildren);
}
}
insertAfter(...nodes: Array<BBCodeContentNode>)
{
if (this.hasParent() && Type.isArrayFilled(nodes))
{
const parent: BBCodeContentNode = this.getParent();
const parentChildren: Array<BBCodeContentNode> = parent.getChildren();
const currentNodeIndex: number = parentChildren.indexOf(this);
const startIndex: number = currentNodeIndex + 1;
const deleteCount: number = 0;
parentChildren.splice(startIndex, deleteCount, ...nodes);
parent.setChildren(parentChildren);
}
}
propagateChild(...children: Array<BBCodeContentNode>)
{
if (this.hasParent())
{
this.insertBefore(
...children.filter((child: BBCodeContentNode) => {
return !['#linebreak', '#tab'].includes(child.getName());
}),
);
}
else
{
this.addDelayedChildren(children);
}
}
onNodeDidMount()
{
const delayedChildren = this.getDelayedChildren();
if (Type.isArrayFilled(delayedChildren))
{
this.propagateChild(...delayedChildren);
this.setDelayedChildren([]);
}
}
removeChild(...children: Array<BBCodeContentNode>)
{
this.children = this.children.reduce((acc: Array<BBCodeContentNode>, node: BBCodeContentNode) => {
if (children.includes(node))
{
node.setParent(null);
return acc;
}
return [...acc, node];
}, []);
}
replaceChild(targetNode: BBCodeContentNode, ...children: Array<BBCodeContentNode | BBCodeFragmentNode>)
{
this.children = this.children.flatMap((node: BBCodeContentNode) => {
if (node === targetNode)
{
node.setParent(null);
const flattenedChildren: Array<BBCodeContentNode> = BBCodeNode.flattenChildren(children);
return flattenedChildren.map((child: BBCodeContentNode) => {
child.remove();
child.setParent(this);
return child;
});
}
return node;
});
}
replace(...children: Array<BBCodeContentNode | BBCodeFragmentNode>)
{
if (this.hasParent())
{
const parent = this.getParent();
parent.replaceChild(this, ...children);
}
}
clone(options: { deep: boolean } = {}): BBCodeNode
{
const children = (() => {
if (options.deep)
{
return this.getChildren().map((child) => {
return child.clone(options);
});
}
return [];
})();
return this.getScheme().createNode({
name: this.getName(),
parent: this.getParent(),
children,
});
}
toPlainText(): string
{
return this.getChildren().map((child) => {
return child.toPlainText();
}).join('');
}
getTextContent(): string
{
return this.toPlainText();
}
getPlainTextLength(): number
{
return this.toPlainText().length;
}
removePreviewsSiblings()
{
const removePreviewsSiblings = (node: BBCodeContentNode) => {
const previewsSiblings = node.getPreviewsSiblings();
if (Type.isArray(previewsSiblings))
{
previewsSiblings.forEach((sibling: BBCodeContentNode) => {
sibling.remove();
});
}
const parent = node.getParent();
if (parent)
{
removePreviewsSiblings(parent);
}
};
removePreviewsSiblings(this);
}
removeNextSiblings()
{
const removeNextSiblings = (node: BBCodeContentNode) => {
const nextSiblings = node.getNextSiblings();
if (Type.isArray(nextSiblings))
{
nextSiblings.forEach((sibling: BBCodeContentNode) => {
sibling.remove();
});
}
const parent = node.getParent();
if (parent)
{
removeNextSiblings(parent);
}
};
removeNextSiblings(this);
}
findByTextIndex(index: number): ?{ node: BBCodeTextNode, startIndex: number, endIndex: number }
{
let currentIndex = 0;
let startIndex = 0;
let endIndex = 0;
const node = BBCodeNode.flattenAst(this).find((child: BBCodeContentNode) => {
if (
child.getName() === '#text'
|| child.getName() === '#linebreak'
|| child.getName() === '#tab'
)
{
startIndex = currentIndex;
endIndex = startIndex + child.getLength();
currentIndex = endIndex;
return index >= startIndex && endIndex >= index;
}
return false;
});
if (node)
{
return { node, startIndex, endIndex };
}
return null;
}
split(options: { offset: number, byWord?: boolean}): Array<BBCodeContentNode>
{
const { offset, byWord = false } = options;
const plainTextLength = this.getPlainTextLength();
const leftTree = (() => {
if (plainTextLength === offset)
{
return this.clone({ deep: true });
}
if (offset <= 0 || offset > plainTextLength)
{
return null;
}
const tree = this.clone({ deep: true });
const { node, startIndex } = tree.findByTextIndex(offset);
const [leftNode, rightNode] = node.split({ offset: offset - startIndex, byWord });
if (leftNode)
{
node.replace(leftNode);
leftNode.removeNextSiblings();
}
else if (rightNode)
{
rightNode.removeNextSiblings();
rightNode.remove();
}
return tree;
})();
const rightTree = (() => {
if (plainTextLength === offset)
{
return null;
}
if (offset === 0)
{
return this.clone({ deep: true });
}
const tree = this.clone({ deep: true });
const { node, startIndex } = tree.findByTextIndex(offset);
const [leftNode, rightNode] = node.split({ offset: offset - startIndex, byWord });
if (rightNode)
{
node.replace(rightNode);
rightNode.removePreviewsSiblings();
}
else if (leftNode)
{
leftNode.removePreviewsSiblings();
if (leftNode.hasParent())
{
const parent = leftNode.getParent();
leftNode.remove();
if (parent.getChildrenCount() === 0)
{
parent.remove();
}
}
}
return tree;
})();
return [leftTree, rightTree];
}
static flattenAst(ast): Array<any>
{
const flat = [];
const traverse = (node: BBCodeContentNode) => {
flat.push(node);
if (node.hasChildren())
{
node.getChildren().forEach((child: BBCodeContentNode) => {
traverse(child);
});
}
};
if (ast.hasChildren())
{
ast.getChildren().forEach((child: BBCodeContentNode) => {
traverse(child);
});
}
return flat;
}
toJSON(): SerializedBBCodeNode
{
return {
name: this.getName(),
children: this.getChildren().map((child: BBCodeContentNode) => {
return child.toJSON();
}),
};
}
}