add the bitton to paste parameters into UI for txt2img, img2img, and pnginfo tabs

fixed some [send to..] buttons to work properly with all tabs

modules/generation_parameters_copypaste.py

@@ -0,0 +1,88 @@
+from collections import namedtuple
+import re
+import gradio as gr
+
+re_param = re.compile(r"\s*([\w ]+):\s*([^,]+)(?:,|$)")
+re_imagesize = re.compile(r"^(\d+)x(\d+)$")
+
+
+def parse_generation_parameters(x: str):
+    """parses generation parameters string, the one you see in text field under the picture in UI:
+```
+girl with an artist's beret, determined, blue eyes, desert scene, computer monitors, heavy makeup, by Alphonse Mucha and Charlie Bowater, ((eyeshadow)), (coquettish), detailed, intricate
+Negative prompt: ugly, fat, obese, chubby, (((deformed))), [blurry], bad anatomy, disfigured, poorly drawn face, mutation, mutated, (extra_limb), (ugly), (poorly drawn hands), messy drawing
+Steps: 20, Sampler: Euler a, CFG scale: 7, Seed: 965400086, Size: 512x512, Model hash: 45dee52b
+```
+
+    returns a dict with field values
+    """
+
+    res = {}
+
+    prompt = ""
+    negative_prompt = ""
+
+    done_with_prompt = False
+
+    *lines, lastline = x.strip().split("\n")
+    for i, line in enumerate(lines):
+        line = line.strip()
+        if line.startswith("Negative prompt:"):
+            done_with_prompt = True
+            line = line[16:].strip()
+
+        if done_with_prompt:
+            negative_prompt += line
+        else:
+            prompt += line
+
+    if len(prompt) > 0:
+        res["Prompt"] = prompt
+
+    if len(negative_prompt) > 0:
+        res["Negative prompt"] = negative_prompt
+
+    for k, v in re_param.findall(lastline):
+        m = re_imagesize.match(v)
+        if m is not None:
+            res[k+"-1"] = m.group(1)
+            res[k+"-2"] = m.group(2)
+        else:
+            res[k] = v
+
+    return res
+
+
+def connect_paste(button, d, input_comp, js=None):
+    items = []
+    outputs = []
+
+    def paste_func(prompt):
+        params = parse_generation_parameters(prompt)
+        res = []
+
+        for key, output in zip(items, outputs):
+            v = params.get(key, None)
+
+            if v is None:
+                res.append(gr.update())
+            else:
+                try:
+                    valtype = type(output.value)
+                    val = valtype(v)
+                    res.append(gr.update(value=val))
+                except Exception:
+                    res.append(gr.update())
+
+        return res
+
+    for k, v in d.items():
+        items.append(k)
+        outputs.append(v)
+
+    button.click(
+        fn=paste_func,
+        _js=js,
+        inputs=[input_comp],
+        outputs=outputs,
+    )