feat: delete fields tool

fix: field rename
fix: list fields now scrolls

tools/deleteFields.ts

@@ -0,0 +1,50 @@
+import { forceArgs } from "../cli/forceArgs.ts";
+import { cliPrompt } from "../cli/prompts.ts";
+import { multiSelectMenuInteractive } from "../cli/selectMenu.ts";
+import { TerminalBlock } from "../cli/TerminalLayout.ts";
+import type { callback, ITool } from "../types.ts";
+import { loadPdf, savePdf } from "util/saveLoadPdf.ts";
+import { log } from "util/logfile.ts";
+
+export class DeleteFormFields implements ITool {
+  name = "deleteFormFields";
+  description = "delete multiple form fields from a PDF";
+  block?: TerminalBlock;
+
+  async run(pdfPath: string = "") {
+    if (!this.block) this.block = new TerminalBlock();
+    [pdfPath] = await forceArgs([pdfPath], [[
+      "Please provide path to PDF",
+      (d) => d?.endsWith(".pdf"),
+    ]], this.block);
+
+    const pdf = await loadPdf(pdfPath);
+    const form = pdf.getForm();
+    const fields = form.getFields();
+    let updatesMade = false;
+    await multiSelectMenuInteractive(
+      `${pdfPath}\nSelect fields to delete:`,
+      fields.map<[string, callback]>((
+        f,
+      ) => [f.getName(), () => {
+        while (f.acroField.getWidgets().length) {
+          f.acroField.removeWidget(0);
+        }
+        form.removeField(f);
+        updatesMade = true;
+      }]),
+    );
+    if (!updatesMade) return;
+    const path = await cliPrompt(
+      "Save to path (or hit enter to keep current):",
+      this.block,
+    ) || pdfPath;
+    await savePdf(pdf, path);
+  }
+  help?: (() => Promise<void> | void) | undefined;
+  done?: (() => Promise<void> | void) | undefined;
+  setBlock(block: TerminalBlock) {
+    this.block = block;
+  }
+}
+export default new DeleteFormFields();

tools/fieldRename.ts

@@ -404,7 +404,7 @@ class RenameFields implements ITool {
     if (!this.block) {
       this.block = new TerminalBlock();
     }
-    this.block.setPreserveHistory(true);
+    this.block.setPreserveHistory(false);
 
     [pdfPath, pattern, change] = await forceArgs(
       [pdfPath, pattern, change],

tools/listFormFields.ts

@@ -1,8 +1,8 @@
 import { forceArgs } from "../cli/forceArgs.ts";
-import { cliAlert } from "../cli/prompts.ts";
 import { TerminalBlock } from "../cli/TerminalLayout.ts";
 import { loadPdfForm } from "util/saveLoadPdf.ts";
 import type { ITool } from "../types.ts";
+import { InputManager } from "../cli/InputManager.ts";
 
 export class ListFormFields implements ITool {
   name = "listformfields";
@@ -12,21 +12,48 @@ export class ListFormFields implements ITool {
     if (!this.block) {
       this.block = new TerminalBlock();
     }
-    this.block.setPreserveHistory(true);
+    this.block.setPreserveHistory(false);
     [pdfPath] = await forceArgs([pdfPath], [[
       "Please provide path to PDF:",
       (p) => !!p && p.endsWith(".pdf"),
     ]], this.block);
+    const lines = [pdfPath];
+    let rLines: string[] = [];
 
     const form = await loadPdfForm(pdfPath);
     const fields = form.getFields();
     const fieldNames = fields.map((f) => f.getName());
-    const lines = [];
-    for (const fieldName of fieldNames) {
-      lines.push(fieldName);
-    }
-    this.block.setLines(lines, [0, 1]);
-    await cliAlert("", this.block);
+
+    let offset = 0;
+
+    const buildRLines = () => {
+      rLines = fieldNames.slice(offset, this.block!.getRenderHeight());
+      this.block!.setLines(lines.concat(rLines), [0, 1]);
+    };
+    buildRLines();
+
+    await new Promise<void>((res) => {
+      const im = InputManager.getInstance();
+      const up = () => {
+        if (fieldNames.length < this.block!.getRenderHeight() - 1) return;
+        offset = Math.max(0, offset - 1);
+        buildRLines();
+      };
+      const down = () => {
+        if (fieldNames.length < this.block!.getRenderHeight() - 1) return;
+        offset = Math.min(fieldNames.length, offset + 1);
+        buildRLines();
+      };
+      const enter = () => {
+        res();
+        im.removeEventListener("arrow-up", up);
+        im.removeEventListener("arrow-down", down);
+        im.removeEventListener("enter", enter);
+      };
+      im.addEventListener("arrow-up", up);
+      im.addEventListener("arrow-down", down);
+      im.addEventListener("enter", enter);
+    });
   }
   setBlock(terminalBlock: TerminalBlock) {
     this.block = terminalBlock;