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Merge pull request keystonejs#68 from keystonejs/file-upload-ui
File upload UI
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,46 +1,206 @@ | ||
| import React, { Component } from 'react'; | ||
| import PropTypes from 'prop-types'; | ||
|
|
||
| import { | ||
| FieldContainer, | ||
| FieldLabel, | ||
| FieldInput, | ||
| } from '@keystonejs/ui/src/primitives/fields'; | ||
| // TODO: Upload component? | ||
| import { Input } from '@keystonejs/ui/src/primitives/forms'; | ||
| import { HiddenInput } from '@keystonejs/ui/src/primitives/forms'; | ||
| import { LoadingButton } from '@keystonejs/ui/src/primitives/buttons'; | ||
| import { borderRadius, colors, gridSize } from '@keystonejs/ui/src/theme'; | ||
|
|
||
| function buttonLabelFn({ hasValue }) { | ||
| return hasValue ? 'Change Image' : 'Upload Image'; | ||
| } | ||
|
|
||
| export default class FileField extends Component { | ||
| static propTypes = { | ||
| buttonLabel: PropTypes.func, | ||
| disabled: PropTypes.bool, | ||
| field: PropTypes.object, | ||
| onChange: PropTypes.func, | ||
| }; | ||
| static defaultProps = { | ||
| buttonLabel: buttonLabelFn, | ||
| }; | ||
| state = { | ||
| dataURI: null, | ||
| errorMessage: false, | ||
| isLoading: false, | ||
| }; | ||
|
|
||
| onChange = ({ | ||
| target: { | ||
| validity, | ||
| files: [file], | ||
| }, | ||
| }) => { | ||
| if (!file) return; // bail if the user cancels from the file browser | ||
|
|
||
| const { field, onChange } = this.props; | ||
|
|
||
| // basic validity check | ||
| if (!validity.valid) { | ||
| // TODO - show error state | ||
| this.setState({ | ||
| errorMessage: 'Something went wrong, please reload and try again.', | ||
| }); | ||
| return; | ||
| } | ||
|
|
||
| // check if the file is actually an image | ||
| if (!file.type.includes('image')) { | ||
| this.setState({ | ||
| errorMessage: 'Only image files are allowed. Please try again.', | ||
| }); | ||
| return; | ||
| } else if (this.state.errorMessage) { | ||
| this.setState({ errorMessage: null }); | ||
| } | ||
|
|
||
| onChange(field, file); | ||
| this.getDataURI(file); | ||
| }; | ||
| openFileBrowser = () => { | ||
| if (this.inputRef) this.inputRef.click(); | ||
| }; | ||
|
|
||
| getDataURI = file => { | ||
| const reader = new FileReader(); | ||
|
|
||
| reader.readAsDataURL(file); | ||
| reader.onloadstart = () => { | ||
| this.setState({ isLoading: true }); | ||
| }; | ||
| reader.onerror = err => { | ||
| console.error('Error with Cloudinary preview', err); | ||
| this.setState({ | ||
| errorMessage: 'Something went wrong, please reload and try again.', | ||
| }); | ||
| }; | ||
| reader.onloadend = upload => { | ||
| this.setState({ isLoading: false, dataURI: upload.target.result }); | ||
| }; | ||
| }; | ||
| getImagePath = () => { | ||
| const { field, item } = this.props; | ||
| const { dataURI } = this.state; | ||
| const file = item[field.path]; | ||
|
|
||
| return ( | ||
| (file && file.publicUrlTransformed && file.publicUrlTransformed.url) || | ||
| dataURI | ||
| ); | ||
| }; | ||
| getInputRef = ref => { | ||
| this.inputRef = ref; | ||
| }; | ||
|
|
||
| render() { | ||
| const { autoFocus, field, item } = this.props; | ||
| const { autoFocus, buttonLabel, field, item } = this.props; | ||
| const { errorMessage, isLoading } = this.state; | ||
|
|
||
| const file = item[field.path]; | ||
| const imagePath = this.getImagePath(); | ||
| const button = ( | ||
| <LoadingButton onClick={this.openFileBrowser} isLoading={isLoading}> | ||
| {buttonLabel({ hasValue: imagePath })} | ||
| </LoadingButton> | ||
| ); | ||
|
|
||
| return ( | ||
| <FieldContainer> | ||
| <FieldLabel>{field.label}</FieldLabel> | ||
| <FieldInput> | ||
| <Input | ||
| autocomplete="off" | ||
| {imagePath ? ( | ||
| <Wrapper> | ||
| <Image src={imagePath} alt={field.path} /> | ||
| <Content> | ||
| <div>{button}</div> | ||
| {errorMessage ? ( | ||
| <ErrorInfo>{errorMessage}</ErrorInfo> | ||
| ) : file ? ( | ||
| <MetaInfo>{file.filename || file.name}</MetaInfo> | ||
| ) : null} | ||
| {} | ||
| </Content> | ||
| </Wrapper> | ||
| ) : ( | ||
| button | ||
| )} | ||
|
|
||
| <HiddenInput | ||
| autoComplete="off" | ||
| autoFocus={autoFocus} | ||
| innerRef={this.getInputRef} | ||
| type="file" | ||
| name={field.path} | ||
| onChange={this.onChange} | ||
| /> | ||
| </FieldInput> | ||
| {file && file.publicUrlTransformed && file.publicUrlTransformed.url ? ( | ||
| <img src={file.publicUrlTransformed.url} alt={field.path} /> | ||
| ) : null} | ||
| </FieldContainer> | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| const Wrapper = props => ( | ||
| <div css={{ alignItems: 'flex-start', display: 'flex' }} {...props} /> | ||
| ); | ||
| const Content = props => <div css={{ flex: 1 }} {...props} />; | ||
| const Image = props => ( | ||
| <div | ||
| css={{ | ||
| backgroundColor: 'white', | ||
| borderRadius, | ||
| border: `1px solid ${colors.N20}`, | ||
| flexShrink: 0, | ||
| lineHeight: 0, | ||
| marginRight: gridSize, | ||
| maxWidth: 100, | ||
| padding: 4, | ||
| }} | ||
| > | ||
| <img | ||
| css={{ | ||
| height: 'auto', | ||
| maxWidth: '100%', | ||
| }} | ||
| {...props} | ||
| /> | ||
| </div> | ||
| ); | ||
| const Info = ({ styles, ...props }) => ( | ||
| <div | ||
| css={{ | ||
| borderRadius, | ||
| border: '1px solid transparent', | ||
| display: 'inline-block', | ||
| fontSize: '0.85em', | ||
| marginTop: gridSize, | ||
| padding: `${gridSize / 2}px ${gridSize}px`, | ||
| ...styles, | ||
| }} | ||
| {...props} | ||
| /> | ||
| ); | ||
| const MetaInfo = props => ( | ||
| <Info | ||
| styles={{ | ||
| backgroundColor: colors.N05, | ||
| borderColor: colors.N10, | ||
| color: colors.N60, | ||
| }} | ||
| {...props} | ||
| /> | ||
| ); | ||
| const ErrorInfo = props => ( | ||
| <Info | ||
| styles={{ | ||
| backgroundColor: colors.R.L90, | ||
| borderColor: colors.R.L80, | ||
| color: colors.R.D20, | ||
| }} | ||
| {...props} | ||
| /> | ||
| ); |
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