Add Iterate Button and Improve PFF UI

import copy

import math

import os

import random

import sys

import traceback

import shlex

    return res

def load_prompt_file(file):

    if (file is None):

        lines = []

    else:

        lines = [x.strip() for x in file.decode('utf8', errors='ignore').split("\n")]

    return None, "\n".join(lines), gr.update(lines=7)

class Script(scripts.Script):

    def title(self):

        return "Prompts from file or textbox"

    def ui(self, is_img2img):

        # This checkbox would look nicer as two tabs, but there are two problems:

        # 1) There is a bug in Gradio 3.3 that prevents visibility from working on Tabs

        # 2) Even with Gradio 3.3.1, returning a control (like Tabs) that can't be used as input

        #    causes a AttributeError: 'Tabs' object has no attribute 'preprocess' assert,

        #    due to the way Script assumes all controls returned can be used as inputs.

        # Therefore, there's no good way to use grouping components right now,

        # so we will use a checkbox! :)

        checkbox_txt = gr.Checkbox(label="Show Textbox", value=False)

        file = gr.File(label="File with inputs", type='bytes')

        prompt_txt = gr.TextArea(label="Prompts")

        checkbox_txt.change(fn=lambda x: [gr.File.update(visible = not x), gr.TextArea.update(visible = x)], inputs=[checkbox_txt], outputs=[file, prompt_txt])

        return [checkbox_txt, file, prompt_txt]

    def on_show(self, checkbox_txt, file, prompt_txt):

        return [ gr.Checkbox.update(visible = True), gr.File.update(visible = not checkbox_txt), gr.TextArea.update(visible = checkbox_txt) ]

    def run(self, p, checkbox_txt, data: bytes, prompt_txt: str):

        if checkbox_txt:

        checkbox_iterate = gr.Checkbox(label="Iterate seed every line", value=False)

        prompt_txt = gr.Textbox(label="List of prompt inputs", lines=1)

        file = gr.File(label="Upload prompt inputs", type='bytes')

        file.change(fn=load_prompt_file, inputs=[file], outputs=[file, prompt_txt, prompt_txt])

        # We start at one line. When the text changes, we jump to seven lines, or two lines if no \n.

        # We don't shrink back to 1, because that causes the control to ignore [enter], and it may

        # be unclear to the user that shift-enter is needed.

        prompt_txt.change(lambda tb: gr.update(lines=7) if ("\n" in tb) else gr.update(lines=2), inputs=[prompt_txt], outputs=[prompt_txt])

        return [checkbox_iterate, file, prompt_txt]

    def run(self, p, checkbox_iterate, file, prompt_txt: str):

        lines = [x.strip() for x in prompt_txt.splitlines()]

        else:

            lines = [x.strip() for x in data.decode('utf8', errors='ignore').split("\n")]

        lines = [x for x in lines if len(x) > 0]

        p.do_not_save_grid = True

            jobs.append(args)

        print(f"Will process {len(lines)} lines in {job_count} jobs.")

        if (checkbox_iterate and p.seed == -1):

            p.seed = int(random.randrange(4294967294))

        state.job_count = job_count

        images = []

            proc = process_images(copy_p)

            images += proc.images

            if (checkbox_iterate):

                p.seed = p.seed + (p.batch_size * p.n_iter)

        return Processed(p, images, p.seed, "")

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