/** * Internal floating toolbar manager. * * Renders schema-declared toolbar chrome against one active editor host * contract so text and non-text hosts share the same floating UI behavior. * * Exposes: SFE.ToolbarManager */ (function() { 'use strict'; window.MWP = window.MWP || {}; window.MWP.SFE = window.MWP.SFE || {}; const SFE = window.MWP.SFE; SFE.ManagerData = SFE.ManagerData || {}; const TOOLBAR_FORMAT_ICONS = { undo: '', redo: '', bold: '', italic: '', strikethrough: '', link: '', alignNone: '', alignWide: '', alignFull: '', alignLeft: '', alignCenter: '', alignRight: '', textAlignLeft: '', textAlignCenter: '', textAlignRight: '', orderedList: '', unorderedList: '', indent: '', outdent: '', textAlignmentDropdown: '', replaceMedia: 'Replace', }; /** * Create one runtime toolbar button definition. * * @param {Object} config Button configuration. * @returns {Object} Runtime toolbar button definition. */ function createToolbarButton(config = {}) { return { icon: config.icon || '', title: config.title || '', action: typeof config.action === 'function' ? config.action : () => {}, className: config.className || '', formatKey: config.formatKey || '', formatType: config.formatType || '', value: Object.prototype.hasOwnProperty.call(config, 'value') ? config.value : undefined, tag: config.tag || '', activeTags: Array.isArray(config.activeTags) ? config.activeTags : [], }; } /** * Create one runtime toolbar dropdown definition. * * @param {Object} config Dropdown configuration. * @returns {Object} Runtime toolbar dropdown definition. */ function createToolbarDropdown(config = {}) { return { type: 'dropdown', title: config.title || '', defaultIcon: config.defaultIcon || '', options: Array.isArray(config.options) ? config.options.filter(Boolean) : [], formatKey: config.formatKey || '', }; } /** * Execute one schema block-attribute operation from a toolbar action. * * @param {Object|null} editor Editor host. * @param {string} operationId Schema operation id. * @param {*} value Requested operation value. * @returns {void} */ function executeSchemaBlockAttributeOperation(editor, operationId, value) { const operationExecutor = SFE.SchemaOperationExecutor || null; if (!operationExecutor || typeof operationExecutor.executeBlockAttributeOperation !== 'function') { return; } operationExecutor.executeBlockAttributeOperation({ editorHost: editor, operationId, value, saveHistory: true, }); } /** * Execute one schema list operation from a toolbar action. * * @param {Object|null} editor Editor host. * @param {string} operationId Schema or primitive operation id. * @returns {void} */ function executeSchemaListOperation(editor, operationId) { if (typeof editor?.executeListStructureOperation !== 'function') { return; } editor.executeListStructureOperation({ kind: operationId, }); } /** * Execute one list type switch from a toolbar action. * * @param {Object|null} editor Editor host. * @param {string} listType List type token. * @returns {void} */ function executeListTypeOperation(editor, listType) { const createTag = listType === 'ordered' ? 'ol' : 'ul'; const oppositeTag = listType === 'ordered' ? 'UL' : 'OL'; const operationExecutor = SFE.SchemaOperationExecutor || null; if (editor?._linkUIActive && typeof editor.closeLinkUI === 'function') { editor.closeLinkUI(); } const selection = window.getSelection(); if (selection?.rangeCount > 0) { const range = selection.getRangeAt(0); let startLi = range.startContainer; let endLi = range.endContainer; while (startLi && startLi !== editor?.element && startLi.tagName !== 'LI') { startLi = startLi.parentNode; } while (endLi && endLi !== editor?.element && endLi.tagName !== 'LI') { endLi = endLi.parentNode; } if (startLi && endLi && startLi !== endLi) { return; } } if ( (editor?.element?.tagName === 'UL' || editor?.element?.tagName === 'OL') && operationExecutor && typeof operationExecutor.executeCurrentListTypeChange === 'function' ) { const result = operationExecutor.executeCurrentListTypeChange({ editorHost: editor, value: listType, }); if (result) { return; } } const listItem = typeof editor?.getCurrentListItem === 'function' ? editor.getCurrentListItem() : null; if (!listItem) { if (typeof editor?.insertListManual === 'function') { editor.insertListManual(createTag); setTimeout(() => { const list = typeof editor?.getParentList === 'function' ? editor.getParentList() : null; if (list) { list.classList.add('wp-block-list'); } }, 10); } return; } const currentList = listItem.parentNode; if ( currentList && currentList.tagName === oppositeTag && typeof editor?.changeListType === 'function' ) { editor.changeListType(currentList, createTag); } } /** * Build one toolbar button for a schema token that toggles inline formatting. * * @param {string} token Token name. * @param {string} title Button title. * @param {string} icon Icon markup. * @param {string} tagName Inline tag name. * @param {string[]} activeTags Active-tag list for toolbar state. * @returns {Object} Runtime toolbar button definition. */ function createInlineFormatButton(token, title, icon, tagName, activeTags) { return createToolbarButton({ formatKey: token, title, icon, activeTags, action: (editor) => { if (typeof editor?.toggleInlineFormat !== 'function') { return; } editor.executeAction(() => { editor.toggleInlineFormat(tagName); }, { saveHistory: false }); }, }); } /** * Build one toolbar button for a schema token that opens link editing. * * @param {string} token Token name. * @param {string} title Button title. * @returns {Object} Runtime toolbar button definition. */ function createLinkButton(token, title) { return createToolbarButton({ formatKey: token, title, icon: TOOLBAR_FORMAT_ICONS.link, action: (editor) => { if (typeof editor?.showLinkUI !== 'function') { return; } const usesElementScopedLinkEditing = typeof editor.supportsElementLinkEditing === 'function' ? editor.supportsElementLinkEditing() : false; const existingLink = typeof editor.getParentElement === 'function' ? editor.getParentElement('a') : null; editor.showLinkUI(usesElementScopedLinkEditing ? null : existingLink); }, }); } /** * Determine whether schema declares element-scoped link editing for the * active text component. * * @param {HTMLElement|null} element Active editable element. * @param {Object} editorOptions Normalized component editor options. * @returns {boolean} True when the component edits its root anchor directly. */ function supportsElementScopedLinkToken(element, editorOptions = {}) { if (!element || element.tagName !== 'A') { return false; } const inlineFormatCapabilities = ( editorOptions?.inlineFormatCapabilities && typeof editorOptions.inlineFormatCapabilities === 'object' ) ? editorOptions.inlineFormatCapabilities : null; const attributeCapabilities = ( editorOptions?.attributeCapabilities && typeof editorOptions.attributeCapabilities === 'object' ) ? editorOptions.attributeCapabilities : null; const buttonLinkCapability = inlineFormatCapabilities?.buttonLink; const buttonLinkTag = typeof buttonLinkCapability?.tag === 'string' ? buttonLinkCapability.tag.trim().toLowerCase() : ''; if (buttonLinkTag !== 'a') { return false; } const attributes = Array.isArray(attributeCapabilities?.buttonLink?.attributes) ? attributeCapabilities.buttonLink.attributes .map(value => (typeof value === 'string' ? value.trim() : '')) .filter(Boolean) : []; return attributes.includes('url'); } /** * Build one toolbar button for a schema list indentation action. * * @param {string} token Token name. * @param {string} title Button title. * @param {string} icon Icon markup. * @param {string} operationId Schema list operation id. * @returns {Object} Runtime toolbar button definition. */ function createListIndentButton(token, title, icon, operationId) { return createToolbarButton({ formatKey: token, title, icon, action: (editor) => { executeSchemaListOperation(editor, operationId); }, }); } /** * Build one toolbar option for schema-backed block alignment. * * @param {string} optionKey Icon/format lookup key. * @param {string} title Option title. * @param {string} value Alignment value. * @returns {Object} Runtime toolbar option definition. */ function createBlockAlignOption(optionKey, title, value) { return createToolbarButton({ formatKey: optionKey, formatType: 'blockAlign', title, icon: TOOLBAR_FORMAT_ICONS[optionKey], value, action: (editor) => { executeSchemaBlockAttributeOperation(editor, 'set_align', value); }, }); } /** * Build one toolbar option for schema-backed text alignment. * * @param {string} optionKey Icon/format lookup key. * @param {string} title Option title. * @param {string} value Alignment value. * @returns {Object} Runtime toolbar option definition. */ function createTextAlignmentOption(optionKey, title, value) { return createToolbarButton({ formatKey: optionKey, formatType: 'textAlignment', title, icon: TOOLBAR_FORMAT_ICONS[optionKey], value, action: (editor) => { executeSchemaBlockAttributeOperation(editor, 'set_text_align', value); }, }); } /** * Build one toolbar option for schema-backed heading level changes. * * @param {string|number} level Heading level or element-tag value. * @returns {Object} Runtime toolbar option definition. */ function createHeadingLevelOption(level) { const value = typeof level === 'string' ? level.trim().toLowerCase() : level; const tag = typeof value === 'number' ? `h${value}` : value; const levelNumber = Number.parseInt(String(tag).replace(/^h/i, ''), 10); const title = tag === 'p' ? 'Paragraph' : tag === 'div' ? 'Div' : `Heading ${levelNumber}`; return createToolbarButton({ formatKey: String(tag), title, icon: title, tag, value, action: (editor) => { executeSchemaBlockAttributeOperation(editor, 'set_heading_level', value); }, }); } /** * Return the canonical built-in block-align toolbar option map. * * @returns {Map} Built-in block-align options keyed by value. */ function getBlockAlignOptionMap() { return new Map([ ['none', createBlockAlignOption('alignNone', 'None', 'none')], ['wide', createBlockAlignOption('alignWide', 'Wide Width', 'wide')], ['full', createBlockAlignOption('alignFull', 'Full Width', 'full')], ['left', createBlockAlignOption('alignLeft', 'Align Left', 'left')], ['center', createBlockAlignOption('alignCenter', 'Align Center', 'center')], ['right', createBlockAlignOption('alignRight', 'Align Right', 'right')], ]); } /** * Create the schema-backed text-alignment dropdown. * * @returns {Object} Runtime toolbar dropdown definition. */ function createTextAlignmentDropdown() { return createToolbarDropdown({ formatKey: 'textAlignment', title: 'Text Alignment', defaultIcon: TOOLBAR_FORMAT_ICONS.textAlignmentDropdown, options: [ createTextAlignmentOption('textAlignLeft', 'Align Text Left', 'left'), createTextAlignmentOption('textAlignCenter', 'Align Text Center', 'center'), createTextAlignmentOption('textAlignRight', 'Align Text Right', 'right'), ], }); } function getSchemaBlockAlignValues(editorOptions = {}) { const operations = Array.isArray(editorOptions?.operations) ? editorOptions.operations : []; const operation = operations.find(candidate => ( String(candidate?.id || '').trim() === 'set_align' && String(candidate?.kind || '').trim() === 'block_attribute_change' )) || null; const operationValues = Array.isArray(operation?.values) ? operation.values : null; const capabilityValues = Array.isArray(editorOptions?.attributeCapabilities?.align?.values) ? editorOptions.attributeCapabilities.align.values : null; const values = operationValues && operationValues.length ? operationValues : capabilityValues; return Array.isArray(values) ? values.map(value => String(value || '').trim().toLowerCase()).filter(Boolean) : []; } function createBlockAlignDropdown(editorOptions = {}) { const allowedValues = getSchemaBlockAlignValues(editorOptions); const optionMap = getBlockAlignOptionMap(); const options = allowedValues.map(value => optionMap.get(value)).filter(Boolean); if (!options.length) { return null; } return createToolbarDropdown({ formatKey: 'align', title: 'Align', defaultIcon: options[0].icon, options }); } /** * Create the schema-backed heading-level dropdown. * * @returns {Object} Runtime toolbar dropdown definition. */ function createHeadingDropdown(editorOptions = {}) { const operation = (editorOptions.operations || []).find(candidate => ( String(candidate?.id || '').trim() === 'set_heading_level' )) || null; const values = Array.isArray(operation?.values) ? operation.values : (editorOptions.attributeCapabilities?.headingLevels?.values || []); return createToolbarDropdown({ formatKey: 'headingLevels', title: 'Heading Level', defaultIcon: 'H', options: values.map(createHeadingLevelOption), }); } /** * Create the shared media-replace toolbar button. * * @returns {Object} Runtime toolbar button definition. */ function createReplaceMediaButton() { return createToolbarButton({ formatKey: 'replaceMedia', icon: TOOLBAR_FORMAT_ICONS.replaceMedia, title: 'Replace Media', className: 'mwp-sfe-editor-btn-text', action: (editor) => { if (typeof editor?.showMediaReplaceUI === 'function') { editor.showMediaReplaceUI(); } } }); } /** * Resolve one built-in schema toolbar token to a runtime format definition. * * @param {string} token Built-in schema toolbar token. * @param {HTMLElement|null} element Active editable element. * @param {Object} editorOptions Normalized editor options. * @returns {Object|null} Runtime toolbar definition or null. */ function resolveSchemaFormatToken(token, element, editorOptions = {}) { const normalizedToken = typeof token === 'string' ? token.trim() : ''; if (!normalizedToken) return null; switch (normalizedToken) { case 'undo': return createToolbarButton({ formatKey: 'undo', title: 'Undo', icon: TOOLBAR_FORMAT_ICONS.undo, action: (editor) => editor?.undo?.(), }); case 'redo': return createToolbarButton({ formatKey: 'redo', title: 'Redo', icon: TOOLBAR_FORMAT_ICONS.redo, action: (editor) => editor?.redo?.(), }); case 'bold': return createInlineFormatButton('bold', 'Bold', TOOLBAR_FORMAT_ICONS.bold, 'strong', ['strong', 'b']); case 'italic': return createInlineFormatButton('italic', 'Italic', TOOLBAR_FORMAT_ICONS.italic, 'em', ['em', 'i']); case 'strikethrough': return createInlineFormatButton('strikethrough', 'Strikethrough', TOOLBAR_FORMAT_ICONS.strikethrough, 's', ['s', 'strike']); case 'link': return createLinkButton('link', 'Link'); case 'buttonLink': return !supportsElementScopedLinkToken(element, editorOptions) ? null : createLinkButton('buttonLink', 'Button Link'); case 'textAlignment': return createTextAlignmentDropdown(); case 'align': return createBlockAlignDropdown(editorOptions); case 'headingLevels': return createHeadingDropdown(editorOptions); case 'orderedList': return createToolbarButton({ formatKey: 'orderedList', title: 'Ordered List', icon: TOOLBAR_FORMAT_ICONS.orderedList, action: (editor) => executeListTypeOperation(editor, 'ordered'), }); case 'unorderedList': return createToolbarButton({ formatKey: 'unorderedList', title: 'Unordered List', icon: TOOLBAR_FORMAT_ICONS.unorderedList, action: (editor) => executeListTypeOperation(editor, 'unordered'), }); case 'indent': return createListIndentButton('indent', 'Indent', TOOLBAR_FORMAT_ICONS.indent, 'indent_list_item'); case 'outdent': return createListIndentButton('outdent', 'Outdent', TOOLBAR_FORMAT_ICONS.outdent, 'outdent_list_item'); case 'replaceMedia': return createReplaceMediaButton(); default: return null; } } /** * Convert one nested schema format token spec into concrete toolbar configs. * * @param {Array} formatsSpec Nested schema token spec. * @param {HTMLElement|null} element Active editable element. * @param {Object} editorOptions Normalized editor options. * @param {number} depth Current recursion depth. * @returns {Array|null} Concrete toolbar config tree. */ function buildFormatsFromSchemaSpec(formatsSpec, element, editorOptions = {}, depth = 0) { if (depth > 3 || !Array.isArray(formatsSpec)) return null; const resolved = []; formatsSpec.forEach(item => { if (typeof item === 'string') { const format = resolveSchemaFormatToken(item, element, editorOptions); if (format) { resolved.push(format); } return; } if (Array.isArray(item)) { const group = buildFormatsFromSchemaSpec(item, element, editorOptions, depth + 1); if (Array.isArray(group) && group.length) { resolved.push(group); } } }); return resolved.length ? resolved : null; } /** * Flatten one nested toolbar definition tree into a single format list. * * @param {Array} items Nested toolbar definition tree. * @returns {Object[]} Flat format list. */ function flattenFormats(items = []) { const flattened = []; (items || []).forEach((item) => { if (Array.isArray(item)) { flattened.push(...flattenFormats(item)); return; } if (!item || typeof item !== 'object') { return; } flattened.push(item); if (item.type === 'dropdown' && Array.isArray(item.options)) { flattened.push(...flattenFormats(item.options)); } }); return flattened; } class ToolbarManager { constructor(host, options = {}) { this.host = host || null; this.options = options || {}; this.toolbar = null; this._toolbarPointerdownHandler = null; this._activeToolbarDropdownWrapper = null; if (this.host && typeof this.host.attachToolbarManager === 'function') { this.host.attachToolbarManager(this); } } getFormats() { return Array.isArray(this.host?.formats) ? this.host.formats : []; } /** * Return one flat runtime toolbar format list. * * @returns {Object[]} Flat toolbar format list. */ getFlatFormats() { return flattenFormats(this.getFormats()); } createToolbar() { if (this.toolbar && this.toolbar.parentNode) this.toolbar.remove(); this.toolbar = document.createElement('div'); this.toolbar.className = 'mwp-sfe-editor-toolbar'; const selectorSvg = ''; const createButton = (format) => { const btn = document.createElement('button'); btn.type = 'button'; btn.className = ['mwp-sfe-editor-btn', format.className || ''].filter(Boolean).join(' '); btn.innerHTML = format.icon; btn.title = format.title; btn.dataset.format = format.title; if (format.title === 'Undo') btn.dataset.action = 'undo'; if (format.title === 'Redo') btn.dataset.action = 'redo'; btn.addEventListener('mousedown', (event) => event.preventDefault()); btn.addEventListener('click', (event) => { event.preventDefault(); format.action(this.host); }); return btn; }; const buildItems = (items, container) => { items.forEach(item => { if (Array.isArray(item)) { const group = document.createElement('div'); group.className = 'mwp-sfe-btn-group'; buildItems(item, group); container.appendChild(group); } else if (item.type === 'dropdown') { const wrapper = document.createElement('div'); wrapper.className = 'mwp-sfe-dropdown'; const toggle = document.createElement('button'); toggle.className = 'mwp-sfe-editor-btn mwp-sfe-dropdown-toggle'; toggle.title = item.title; if (item.formatKey === 'headingLevels') { wrapper.classList.add('mwp-sfe-dropdown-heading-level'); toggle.innerHTML = `${item.defaultIcon} ${selectorSvg}`; } else { toggle.innerHTML = `${item.defaultIcon}`; } const content = document.createElement('div'); content.className = 'mwp-sfe-dropdown-content'; item.options.forEach(opt => { const optBtn = createButton(opt); optBtn.addEventListener('click', () => { if (item.formatKey === 'headingLevels') { toggle.innerHTML = `${opt.icon} ${selectorSvg}`; } else { toggle.innerHTML = `${opt.icon}`; } content.classList.remove('mwp-sfe-show'); }); content.appendChild(optBtn); }); toggle.addEventListener('mousedown', (event) => event.preventDefault()); toggle.addEventListener('click', (event) => { event.preventDefault(); this.toolbar.querySelectorAll('.mwp-sfe-dropdown-content.mwp-sfe-show').forEach(el => { if (el !== content) el.classList.remove('mwp-sfe-show'); }); content.classList.toggle('mwp-sfe-show'); this._activeToolbarDropdownWrapper = content.classList.contains('mwp-sfe-show') ? wrapper : null; }); wrapper.appendChild(toggle); wrapper.appendChild(content); if (container.className !== 'mwp-sfe-btn-group') { const group = document.createElement('div'); group.className = 'mwp-sfe-btn-group'; group.appendChild(wrapper); container.appendChild(group); } else { container.appendChild(wrapper); } } else { const btn = createButton(item); if (container.className !== 'mwp-sfe-btn-group') { const group = document.createElement('div'); group.className = 'mwp-sfe-btn-group'; group.appendChild(btn); container.appendChild(group); } else { container.appendChild(btn); } } }); }; buildItems(this.getFormats(), this.toolbar); this.attachToolbarDropdownCloseHandler(); const toolbarContainer = this.host?.options?.toolbarContainer || null; if (toolbarContainer) { toolbarContainer.innerHTML = ''; toolbarContainer.appendChild(this.toolbar); } else if (this.host?.element?.parentNode) { this.host.element.parentNode.insertBefore(this.toolbar, this.host.element); } this.updateUndoRedoButtons(); } closeToolbarDropdowns() { if (!this.toolbar) { return; } this.toolbar.querySelectorAll('.mwp-sfe-dropdown-content.mwp-sfe-show').forEach((element) => { element.classList.remove('mwp-sfe-show'); }); this._activeToolbarDropdownWrapper = null; } attachToolbarDropdownCloseHandler() { if (!this.toolbar) { return; } if (this._toolbarPointerdownHandler) { document.removeEventListener('pointerdown', this._toolbarPointerdownHandler, true); } this._toolbarPointerdownHandler = (event) => { if ( !this.toolbar || ( this._activeToolbarDropdownWrapper && this._activeToolbarDropdownWrapper.contains(event.target) ) ) { return; } this.closeToolbarDropdowns(); }; document.addEventListener('pointerdown', this._toolbarPointerdownHandler, true); } updateUndoRedoButtons() { if (!this.toolbar) return; const undoBtn = this.toolbar.querySelector('[data-action="undo"]'); const redoBtn = this.toolbar.querySelector('[data-action="redo"]'); const canUndo = typeof this.host?.canUndo === 'function' ? this.host.canUndo() : ( typeof this.host?.historyIndex === 'number' && this.host.historyIndex > 0 ); const canRedo = typeof this.host?.canRedo === 'function' ? this.host.canRedo() : ( typeof this.host?.historyIndex === 'number' && Array.isArray(this.host?.history) && this.host.historyIndex < this.host.history.length - 1 ); if (undoBtn) { undoBtn.disabled = !canUndo; } if (redoBtn) { redoBtn.disabled = !canRedo; } } setToolbarButtonDisabled(title, isDisabled) { if (!this.toolbar || !title) { return; } const button = this.toolbar.querySelector(`button[title="${title}"]`); if (button) { button.disabled = !!isDisabled; } } updateToolbarState() { if (!this.toolbar || !this.host) return; const selection = window.getSelection(); const hasSelectionInEditor = ( selection && selection.rangeCount && typeof this.host.isSelectionInEditor === 'function' && this.host.isSelectionInEditor() ); const parents = []; if (this.host.element?.tagName) { parents.push(this.host.element.tagName.toLowerCase()); } if (hasSelectionInEditor) { const range = selection.getRangeAt(0); let node = range.commonAncestorContainer; while (node && node !== this.host.element) { if (node.nodeType === 1) parents.push(node.tagName.toLowerCase()); node = node.parentNode; } } this.toolbar.querySelectorAll('.mwp-sfe-editor-btn').forEach(btn => { btn.classList.remove('mwp-sfe-editor-btn-active'); }); const checkActive = (format, tags) => { if (!format || !Array.isArray(tags) || !tags.some(tag => parents.includes(tag))) { return false; } const btn = this.toolbar.querySelector(`button[title="${format.title}"]`); if (btn) btn.classList.add('mwp-sfe-editor-btn-active'); return true; }; if (hasSelectionInEditor) { this.getFlatFormats().forEach((format) => { if (!Array.isArray(format?.activeTags) || !format.activeTags.length) { return; } checkActive(format, format.activeTags); }); } const currentAlign = typeof this.host.getBlockAlignState === 'function' ? this.host.getBlockAlignState() : 'none'; const currentTextAlignment = typeof this.host.getTextAlignmentState === 'function' ? this.host.getTextAlignmentState() : 'left'; const currentHeadingLevel = typeof this.host.getHeadingLevelState === 'function' ? this.host.getHeadingLevelState() : null; const getDropdownFormats = (items) => { const dropdowns = []; (items || []).forEach(item => { if (Array.isArray(item)) { dropdowns.push(...getDropdownFormats(item)); return; } if (item && item.type === 'dropdown') { dropdowns.push(item); } }); return dropdowns; }; getDropdownFormats(this.getFormats()).forEach(item => { const toggle = this.toolbar.querySelector(`button[title="${item.title}"]`); if (!toggle) return; const activeOption = item.options.find(opt => { const headingLevel = typeof this.host.getHeadingLevelValueForOption === 'function' ? this.host.getHeadingLevelValueForOption(opt) : null; if ( item.formatKey === 'headingLevels' && headingLevel === currentHeadingLevel ) { return true; } if ( typeof this.host.isTextAlignmentOptionActive === 'function' && this.host.isTextAlignmentOptionActive(opt, currentTextAlignment) ) { return true; } if ( typeof this.host.isBlockAlignOptionActive === 'function' && this.host.isBlockAlignOptionActive(opt, currentAlign) ) { return true; } return false; }); const selectorSvg = ''; if (activeOption) { toggle.innerHTML = item.formatKey === 'headingLevels' ? `${activeOption.icon} ${selectorSvg}` : `${activeOption.icon}`; } else { toggle.innerHTML = item.formatKey === 'headingLevels' ? `${item.defaultIcon} ${selectorSvg}` : `${item.defaultIcon}`; } item.options.forEach(opt => { const optionButton = this.toolbar.querySelector(`button[title="${opt.title}"]`); if (!optionButton) return; let isDisabled = false; if (item.formatKey === 'headingLevels') { const optionLevel = typeof this.host.getHeadingLevelValueForOption === 'function' ? this.host.getHeadingLevelValueForOption(opt) : null; isDisabled = optionLevel === currentHeadingLevel; } else if ( typeof this.host.getTextAlignmentValueForOption === 'function' && this.host.getTextAlignmentValueForOption(opt) ) { isDisabled = typeof this.host.isTextAlignmentOptionActive === 'function' ? this.host.isTextAlignmentOptionActive(opt, currentTextAlignment) : false; } else if ( typeof this.host.getBlockAlignValueForOption === 'function' && this.host.getBlockAlignValueForOption(opt) ) { isDisabled = typeof this.host.isBlockAlignOptionActive === 'function' ? this.host.isBlockAlignOptionActive(opt, currentAlign) : false; } optionButton.disabled = isDisabled; }); }); const operationExecutor = SFE.SchemaOperationExecutor || null; const currentListItem = typeof this.host.getCurrentListItem === 'function' ? this.host.getCurrentListItem() : null; const currentList = ( operationExecutor && typeof operationExecutor.getCurrentListElement === 'function' ) ? operationExecutor.getCurrentListElement(this.host) : ( typeof this.host.getParentList === 'function' ? this.host.getParentList() : null ); const canIndent = typeof this.host.canIndentListItem === 'function' ? this.host.canIndentListItem(currentListItem) : false; const canOutdent = typeof this.host.canOutdentListItem === 'function' ? this.host.canOutdentListItem(currentListItem) : false; this.setToolbarButtonDisabled('Ordered List', !currentList || currentList.tagName === 'OL'); this.setToolbarButtonDisabled('Unordered List', !currentList || currentList.tagName === 'UL'); this.setToolbarButtonDisabled('Indent', !currentListItem || !canIndent); this.setToolbarButtonDisabled('Outdent', !currentListItem || !canOutdent); this.updateUndoRedoButtons(); } destroy(options = {}) { const removeToolbar = options.removeToolbar !== false; if (this._toolbarPointerdownHandler) { document.removeEventListener('pointerdown', this._toolbarPointerdownHandler, true); this._toolbarPointerdownHandler = null; } this._activeToolbarDropdownWrapper = null; if (removeToolbar && this.toolbar && this.toolbar.parentNode) { this.toolbar.remove(); } if (this.host && typeof this.host.detachToolbarManager === 'function') { this.host.detachToolbarManager(this); } this.toolbar = removeToolbar ? null : this.toolbar; this.host = null; } static resolveFormats(editorOptions = {}, element = null) { const schemaFormats = buildFormatsFromSchemaSpec(editorOptions?.formats, element, editorOptions); return Array.isArray(schemaFormats) && schemaFormats.length ? schemaFormats : []; } } SFE.ToolbarManager = ToolbarManager; if (typeof module !== 'undefined' && module.exports) { module.exports = { ToolbarManager }; } })(); Homepage - Delow Chemicals Limited
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DELOW CHEMICALS
Reliable Chemical Solutions for Nigeria’s Oil & Gas Industry

At Delow Chemicals Limited, we import and supply world-class oilfield chemicals from trusted global partners. With a strong local presence in Nigeria, and compliance with Nigerian industry regulations, we ensure reliable, safe, and timely delivery to operators and service companies.

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Global sourcing from China and beyond

Tailored for Energy & Industry

Serving oil & gas, petrochemicals, and industrial clients

Full Regulatory Compliance

Compliant with NUPRC, NipeX, NOGIC-JQS standards

Who we are

Your Reliable Partner for Oilfield and Industrial Chemicals

Delow Chemicals Limited is a Nigerian-owned company dedicated to providing essential chemical solutions for the oil & gas and industrial sectors. We bridge the gap between global chemical manufacturers and Nigeria’s energy operators, ensuring availability, affordability, and quality.

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Years of Experience
223+
Companies From All Around The World trust on Delow Chemicals Limited for essential chemical solutions

Companies worldwide, including energy operators, service providers, and industrial leaders, choose Delow Chemicals Limited for reliable and cost-effective chemical solutions.

Why Choose us

Your Trusted Partner in Oilfield & Industrial Chemicals

At Delow Chemicals Limited, we understand that in the oil & gas industry, reliability and compliance are non-negotiable. That’s why clients across Nigeria and beyond choose us as their chemical supply partner.

Global Partnerships

Direct access to world-class chemical manufacturers.

Industry Expertise

Deep understanding of oilfield and industrial chemical applications.

Regulatory Compliance

Fully aligned with NUPRC, NipeX, and NOGIC-JQS standards.

Efficient Logistics

Seamless deliveries through Lagos and Onne ports.

Customer Commitment

Personalized support and long-term partnerships built on trust.

Customer Commitment

Personalized support and long-term partnerships built on trust.

Our Products

At Delow Chemicals Limited, we supply a wide portfolio of chemicals sourced from globally trusted manufacturers. Each product is selected to meet the strict requirements of Nigeria’s oil, gas, and industrial sectors, ensuring safety, performance, and compliance.

Caustic Soda Flakes (99%)

An essential alkali chemical widely used in drilling and industrial operations.

  • Applications: pH control in drilling fluids, refining processes, water treatment, and industrial manufacturing.

  • Features: High purity (99%), easy to handle, and packaged for safe transport and storage.

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Soda Ash Dense

A versatile chemical for drilling and industrial processes.

  • Applications: Water treatment, drilling mud conditioning, glass production, and detergents.

  • Features: Excellent solubility, reliable performance, and consistent quality.
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Mono-Ethylene Glycol (MEG)

A critical component for energy and processing industries.

  • Applications: Hydrate inhibitor for pipelines, antifreeze in processing plants, raw material for petrochemicals.

  • Features: High-grade quality, reliable freeze-point depression, and safe for long-distance pipeline use.

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Specialty Chemicals

Tailored solutions for oilfield and industrial challenges.

  • Biocides – Prevent microbial growth in drilling fluids and pipelines.

  • Corrosion Inhibitors – Protect equipment and pipelines from corrosion.

  • Scale Inhibitors – Prevent mineral scale formation in wells and production systems.

  • Demulsifiers – Break oil-water emulsions for efficient separation and processing.

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Let’s Power Nigeria’s Energy Industry Together

At Delow Chemicals Limited, we don’t just supply chemicals—we provide reliability, compliance, and trusted partnerships.

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Delivering Chemical Solutions Across Nigeria’s Energy & Industrial Sectors

Industries We Serve

Our products support a wide range of clients who rely on us for consistent supply, strict compliance, and technical expertise. Whether upstream, midstream, or downstream, we provide the chemical solutions that keep critical operations running.

International Oil Companies (IOCs)

We supply globally recognized operators with high-quality oilfield chemicals that meet international standards, helping them maintain efficiency and compliance in Nigeria’s energy sector.

NNPC & Indigenous Operators

As a proudly Nigerian company, we support NNPC and local independents with cost-effective, reliable supplies that align with local content regulations, strengthening the Nigerian energy value chain.

Drilling Contractors & Service Companies

From drilling fluids to specialty treatments, we provide contractors with the essential chemicals required for safe, efficient, and uninterrupted field operations.

Petrochemical Plants & Industrial Clients

We serve downstream industries with versatile chemical solutions for refining, processing, and industrial manufacturing—helping clients reduce costs, improve efficiency, and meet production targets.

Certified. Compliant. Reliable.

We operate in strict alignment with Nigerian industry regulations, holding the following certifications and registrations:

  • NUPRC Oil & Gas Industry Service Permit (OGISP)

  • NipeX NJQS registration

  • NOGIC-JQS (Local Content compliance)

  • SONCAP & NESREA standards

Our strong Health, Safety, and Environment (HSE) framework ensures safe handling, storage, and transportation of all chemicals, safeguarding both people and the environment.

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