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import * as inputActions from '../actions/input';
import * as keys from '../shared/keys';
import * as operationActions from '../actions/operation';
export default class BackgroundInputComponent {
constructor(store) {
this.store = store;
this.keymaps = {};
this.prevInputs = [];
}
update(sender) {
let state = this.store.getState();
this.reloadSettings(state.setting);
this.handleKeyInputs(sender, state.input);
}
reloadSettings(setting) {
if (!setting.settings.json) {
return;
}
this.keymaps = JSON.parse(setting.settings.json).keymaps;
}
handleKeyInputs(sender, input) {
if (JSON.stringify(this.prevInputs) === JSON.stringify(input)) {
return;
}
this.prevInputs = input;
if (input.keys.length === 0) {
return;
}
if (sender) {
return this.handleKeysChanged(sender, input);
}
}
handleKeysChanged(sender, input) {
let prefix = keys.asKeymapChars(input.keys);
let matched = Object.keys(this.keymaps).filter((keyStr) => {
return keyStr.startsWith(prefix);
});
if (matched.length === 0) {
this.store.dispatch(inputActions.clearKeys(), sender);
return Promise.resolve();
} else if (matched.length > 1 ||
matched.length === 1 && prefix !== matched[0]) {
return Promise.resolve();
}
let operation = this.keymaps[matched];
this.store.dispatch(operationActions.exec(operation, sender.tab), sender);
this.store.dispatch(inputActions.clearKeys(), sender);
}
}
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