use layout() where appropriate and cleanup

sys/apps/inspect.lua

@@ -133,6 +133,12 @@ page = UI.Page {
 			},
 		},
 	},
+	accelerators = {
+		['shift-right'] = 'size',
+		['shift-left' ] = 'size',
+		['shift-up'   ] = 'size',
+		['shift-down' ] = 'size',
+	},
 	eventHandler = function (self, event)
 		if event.type == 'focus_change' and isRelevant(event.focused) then
 			focused = event.focused
@@ -168,6 +174,19 @@ page = UI.Page {
 
 		elseif event.type == 'editor_apply' then
 			self.editor:hide()
+
+		elseif event.type == 'size' then
+			local sizing = {
+				['shift-right'] = {  1,  0 },
+				['shift-left' ] = { -1,  0 },
+				['shift-up'   ] = {  0, -1 },
+				['shift-down' ] = {  0,  1 },
+			}
+			self.ox = math.max(self.ox + sizing[event.ie.code][1], 1)
+			self.oy = math.max(self.oy + sizing[event.ie.code][2], 1)
+			UI.term.device.clear()
+			self:resize()
+			self:draw()
 		end
 
 		return UI.Page.eventHandler(self, event)