cycle-selection-driver

A Cycle.js driver for interacting with the Selection API

Installation

npm install cycle-selection-driver --save

Usage

See test-site directory for usage example.

API

selectionDriver(sink$)

A Cycle.js driver that returns a SelectionSource.

Arguments

sink$

A stream of ITargetSelectionRange objects. When the sink stream emits an event, the specified range will be selected.

Returns

SelectionSource

SelectionSource

A Cycle.js source that provides access to user selections.

Methods

.selections(selector)

Returns a stream of ISelectionRange objects which represent the current user selection. The stream will emit each time the selectionchange event is fired and the selection matches the specified selector. null will be emitted when the selection changes to no longer match the specified selector.

Arguments

selector

A string that allows you to filter the selections to a specific element and its descendants. Selections that occur in an element that doesn't match the selector will be ignored. The selector should be a valid css selector string.

Returns

ISelectionRange for selection change events that match the specified selector; else, null.

ISelectionRange

A range of text selected by the user or the current position of the caret.

Properties

• anchorNode - The node where the user began their selection
• anchorOffset - Character offset relative to the anchorNode where the user began their selection
• endElement - Element where the selection ends (matches or comes after the startElement)
• endOffset - Character offset relative to the endElement where the selection ends (matches or comes after the startOffset)
• focusNode - The node where the user finished their selection
• focusOffset - Character offset relative to the focusNode where the user finished their selection
• rootElement - Root element for the selection based on the specified selector
• startElement - Element where the selection starts (matches or comes before the endElement)
• startOffset - Character offset relative to the startElement where the selection starts (matches or comes before the endOffset)
• text - Selected text

ITargetSelectionRange

An object representing a range of text to be selected.

Properties

• endNode - Node or css selector matching the node where the selection should end
• endOffset - Character offset of the end of the selection range relative to the endNode.
• startNode - Node or css selector matching the node where the selection should start
• startOffset - Character offset of the start of the selection range relative to the startNode

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