1 files changed, 113 insertions, 0 deletions
diff --git a/ui.js b/ui.js
new file mode 100644
index 0000000..26aa12e
--- /dev/null
+++ b/ui.js
@@ -0,0 +1,113 @@
+const ansi = require('./tui-lib/util/ansi')
+const Button = require('./tui-lib/ui/form/Button')
+const FocusElement = require('./tui-lib/ui/form/FocusElement')
+const ListScrollForm = require('./tui-lib/ui/form/ListScrollForm')
+const Pane = require('./tui-lib/ui/Pane')
+const RecordStore = require('./record-store')
+
+class AppElement extends FocusElement {
+  constructor(internalApp) {
+    super()
+
+    this.internalApp = internalApp
+    this.recordStore = new RecordStore()
+
+    this.pane = new Pane()
+    this.addChild(this.pane)
+
+    this.grouplikeListingElement = new GrouplikeListingElement(this.recordStore)
+    this.pane.addChild(this.grouplikeListingElement)
+  }
+
+  fixLayout() {
+    this.w = this.parent.contentW
+    this.h = this.parent.contentH
+
+    this.pane.w = this.contentW
+    this.pane.h = this.contentH
+
+    this.grouplikeListingElement.w = this.pane.contentW
+    this.grouplikeListingElement.h = this.pane.contentH
+  }
+
+  keyPressed(keyBuf) {
+    if (keyBuf[0] === 0x03) { // ^C
+      this.emit('quitRequested')
+      return
+    }
+
+    super.keyPressed(keyBuf)
+  }
+}
+
+class GrouplikeListingElement extends ListScrollForm {
+  constructor(recordStore) {
+    super('vertical')
+
+    this.grouplike = null
+    this.recordStore = recordStore
+  }
+
+  loadGrouplike(grouplike) {
+    this.grouplike = grouplike
+    this.buildItems()
+  }
+
+  buildItems() {
+    if (!this.grouplike) {
+      throw new Error('Attempted to call buildItems before a grouplike was loaded')
+    }
+
+    for (const item of this.grouplike.items) {
+      this.addInput(new GrouplikeItemElement(item, this.recordStore))
+    }
+
+    this.fixLayout()
+  }
+}
+
+class GrouplikeItemElement extends Button {
+  constructor(item, recordStore) {
+    super()
+
+    this.item = item
+    this.recordStore = recordStore
+  }
+
+  fixLayout() {
+    this.w = this.parent.contentW
+    this.h = 1
+  }
+
+  drawTo(writable) {
+    if (this.isFocused) {
+      writable.write(ansi.invert())
+    }
+
+    writable.write(ansi.moveCursor(this.absTop, this.absLeft))
+    this.drawX = this.x
+    this.writeStatus(writable)
+    this.drawX += this.item.name.length
+    writable.write(this.item.name)
+    writable.write(' '.repeat(this.w - this.drawX))
+
+    writable.write(ansi.resetAttributes())
+  }
+
+  writeStatus(writable) {
+    this.drawX += 3
+
+    const braille = '⠈⠐⠠⠄⠂⠁'
+    const brailleChar = braille[Math.floor(Date.now() / 250) % 6]
+
+    writable.write(' ')
+    if (this.recordStore.getRecord(this.item).downloading) {
+      writable.write(braille[Math.floor(Date.now() / 250) % 6])
+    } else {
+      writable.write(' ')
+    }
+    writable.write(' ')
+  }
+}
+
+module.exports.AppElement = AppElement