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<template>
<el-upload :auto-upload="false" :on-change="addFile" :show-file-list="false" action="" drag multiple>
<i class="el-icon-upload" />
<div class="el-upload__text">将文件拖到此处</div>
<transition name="el-fade-in"
><!--todo: add delay to animation-->
<el-progress
v-show="progress_show"
:format="progress_string"
:percentage="progress_value"
:stroke-width="16"
:text-inside="true"
style="margin: 16px 6px 0 6px"
></el-progress>
</transition>
</el-upload>
</template>
<script>
import { spawn, Worker, Pool } from 'threads';
import { Decrypt } from '@/decrypt';
import { DecryptQueue } from '@/utils/utils';
import { storage } from '@/utils/storage';
export default {
name: 'FileSelector',
data() {
return {
task_all: 0,
task_finished: 0,
queue: new DecryptQueue(), // for http or file protocol
parallel: false,
};
},
computed: {
progress_value() {
return this.task_all ? (this.task_finished / this.task_all) * 100 : 0;
},
progress_show() {
return this.task_all !== this.task_finished;
},
},
mounted() {
if (window.Worker && window.location.protocol !== 'file:' && process.env.NODE_ENV === 'production') {
console.log('Using Worker Pool');
this.queue = Pool(() => spawn(new Worker('@/utils/worker.ts')), navigator.hardwareConcurrency || 1);
this.parallel = true;
} else {
console.log('Using Queue in Main Thread');
}
},
methods: {
progress_string() {
return `${this.task_finished} / ${this.task_all}`;
},
async addFile(file) {
this.task_all++;
this.queue.queue(async (dec = Decrypt) => {
console.log('start handling', file.name);
try {
this.$emit('success', await dec(file, await storage.getAll()));
} catch (e) {
console.error(e);
this.$emit('error', e, file.name);
} finally {
this.task_finished++;
}
});
},
},
};
</script>