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Request capabilities (e.g. ability to take snapshots) from widgets.

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This commit is contained in:
Richard Lewis 2017-12-16 09:16:24 +00:00
parent e63f5696a6
commit 83f9a4162b
2 changed files with 32 additions and 14 deletions
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14
src/WidgetMessaging.js
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@ -383,6 +383,20 @@ export default class WidgetMessaging extends MatrixPostMessageApi {
});
});
}
getCapabilities() {
return new Promise((resolve, reject) => {
this.exec({
api: "widget_client",
action: "capabilities",
}).then(function(response) {
// console.warn("got capabilities", response.capabilities);
resolve(response.capabilities);
}).catch((error) => {
reject(Error("Failed to get capabilities: " + error.message));
});
});
}
}

32
src/components/views/elements/AppTile.js
View file

@ -33,7 +33,6 @@ import AppWarning from './AppWarning';
import MessageSpinner from './MessageSpinner';
import WidgetUtils from '../../../WidgetUtils';
import dis from '../../../dispatcher';
import domtoimage from 'dom-to-image';
const ALLOWED_APP_URL_SCHEMES = ['https:', 'http:'];
@ -83,9 +82,20 @@ export default React.createClass({
error: null,
deleting: false,
widgetPageTitle: newProps.widgetPageTitle,
capabilities: [],
};
},
/**
* Does the widget support a given capability
* @param {[type]} capability Capability to check for
* @return {Boolean} True if capability supported
*/
_hasCapability(capability) {
return this.state.capabilities.some((c) => {return c === capability;});
},
/**
* Add widget instance specific parameters to pass in wUrl
* Properties passed to widget instance:
@ -327,6 +337,12 @@ export default React.createClass({
this.widgetMessaging = new WidgetMessaging(this.refs.appFrame.contentWindow);
this.widgetMessaging.startListening();
this.widgetMessaging.addEndpoint(this.props.id, this.props.url);
this.widgetMessaging.getCapabilities().then((capabilities) => {
console.log("Got widget capabilities", this.widgetId, capabilities);
this.setState({capabilities});
}).catch((err) => {
console.log("Failed to get widget capabilities", this.widgetId, err);
});
this.setState({loading: false});
},
@ -468,7 +484,7 @@ export default React.createClass({
}
// Picture snapshot
const showPictureSnapshotButton = true; // FIXME - Make this dynamic
const showPictureSnapshotButton = this._hasCapability('screenshot');
const showPictureSnapshotIcon = 'img/camera_green.svg';
const windowStateIcon = (this.props.show ? 'img/minimize.svg' : 'img/maximize.svg');
@ -525,15 +541,3 @@ export default React.createClass({
);
},
});
function dataURLtoBlob(dataurl) {
const arr = dataurl.split(',');
const mime = arr[0].match(/:(.*?);/)[1];
const bstr = atob(arr[1]);
let n = bstr.length;
const u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr], {type: mime});
}