mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-24 17:35:16 +00:00
1 line
13 KiB
JSON
1 line
13 KiB
JSON
|
{"ast":null,"code":"// based on https://github.com/WICG/focus-visible/blob/v4.1.5/src/focus-visible.js\nimport * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nvar hadKeyboardEvent = true;\nvar hadFocusVisibleRecently = false;\nvar hadFocusVisibleRecentlyTimeout = null;\nvar inputTypesWhitelist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n};\n/**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} node\n * @return {boolean}\n */\n\nfunction focusTriggersKeyboardModality(node) {\n var type = node.type,\n tagName = node.tagName;\n\n if (tagName === 'INPUT' && inputTypesWhitelist[type] && !node.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !node.readOnly) {\n return true;\n }\n\n if (node.isContentEditable) {\n return true;\n }\n\n return false;\n}\n/**\n * Keep track of our keyboard modality state with `hadKeyboardEvent`.\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * @param {KeyboardEvent} event\n */\n\n\nfunction handleKeyDown(event) {\n if (event.metaKey || event.altKey || event.ctrlKey) {\n return;\n }\n\n hadKeyboardEvent = true;\n}\n/**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n */\n\n\nfunction handlePointerDown() {\n hadKeyboardEvent = false;\n}\n\nfunction handleVisibilityChange() {\n if (this.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n }\n}\n\nfunction prepare(doc) {\n doc.addEventListener('keydown', handleKeyDown, true);\n doc.addEventListener('mousedown', handlePointerDown, true);\n doc.addEventListener('pointerdown', handlePointerDown, true);\n doc.addEventListener('touchstart', handlePointerDown, true);\n doc.addEventListener('visibilitychange', handleVisibilityChange, true);\n}\n\nexport function teardown(doc) {\n doc.removeEventListener('keydown', handleKeyDown, true);\n doc.removeEventListener('mousedown', handlePointerDown, true);\n doc.removeEventListener('pointerdown', handlePointerDown, true);\n doc.removeEventListener('touchstart', handlePointerDown, true);\n doc.removeEventListener('visibilitychange', handleVisibilityChange, true);\n}\n\nfunction isFocusVisible(event) {\n var target = event.target;\n\n try {\n return target.matches(':focus-visible');\n } catch (error) {} // browsers not implementing :focus-visible will throw a SyntaxError\n // we use our own heuristic for those browsers\n // rethrow might be better if it's not the expected error but do we really\n // want to crash if focus-visible malfunctioned?\n // no need for validFocusTarget check. the user does that by attaching it to\n // focusable events only\n\n\n return hadKeyboardEvent || focusTriggersKeyboardModality(target);\n}\n/**\n * Should be called if a blur event is fired on a focus-visible element\n */\n\n\nfunction handleBlurVisible() {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regula
|