Graphical file picker using Zenity (#312)

* Add files via upload

* Update manifest.json

* Update manifest.json

* Update and rename zenity.lua to gui_filepicker.lua

2 files changed, 217 insertions, 0 deletions

diff --git a/manifest.json b/manifest.json
index 87ed84f..03f6d4c 100644
--- a/manifest.json
+++ b/manifest.json
@@ -330,6 +330,13 @@
       "mod_version": "3"
     },
     {
+      "description": "Graphical filepicker using zenity.",
+      "version": "0.1",
+      "path": "plugins/gui_filepicker.lua",
+      "id": "gui_filepicker",
+      "mod_version": "3"
+    },
+    {
       "description": "Dark (or even Mica!) title bar for Lite XL",
       "version": "0.1",
       "remote": "https://github.com/takase1121/lite-xl-immersive-title:cf3a8029ac7154ea53ac819a95d44a6ff102f051",
diff --git a/plugins/gui_filepicker.lua b/plugins/gui_filepicker.lua
new file mode 100644
index 0000000..60a663f
--- /dev/null
+++ b/plugins/gui_filepicker.lua
@@ -0,0 +1,210 @@
+-- mod-version:3
+
+local core = require("core")
+local command = require("core.command")
+local common = require("core.common")
+local keymap = require("core.keymap")
+
+command.add(nil, {
+
+	["gui-filepicker:open-file"] = function()
+		local zen, proc_err = process.start({
+			"zenity",
+			"--file-selection",
+		}, { stdout = process.REDIRECT_PIPE })
+		if not zen then
+			core.error("Unable to run zenity: %s", proc_err)
+			return
+		end
+
+		-- Run this in a coroutine, so we don't block the UI
+		core.add_thread(function()
+			local buffer = {}
+			while zen:running() do
+				local buf = zen:read_stdout()
+				if buf and #buf > 0 then
+					table.insert(buffer, buf)
+				end
+				coroutine.yield()
+			end
+			local abs_path = table.concat(buffer) or ""
+
+			-- Remove final newline zenity adds
+			abs_path = string.match(abs_path, "^[^\n]+") or ""
+			if #abs_path == 0 then
+				return
+			end
+			core.root_view:open_doc(core.open_doc(common.home_expand(abs_path)))
+		end)
+	end,
+
+	["gui-filepicker:open-project-folder"] = function()
+		local zen, proc_err = process.start({
+			"zenity",
+			"--file-selection",
+			"--directory",
+		}, { stdout = process.REDIRECT_PIPE })
+		if not zen then
+			core.error("Unable to run zenity: %s", proc_err)
+			return
+		end
+
+		-- Run this in a coroutine, so we don't block the UI
+		core.add_thread(function()
+			local buffer = {}
+			while zen:running() do
+				local buf = zen:read_stdout()
+				if buf and #buf > 0 then
+					table.insert(buffer, buf)
+				end
+				coroutine.yield()
+			end
+			local abs_path = table.concat(buffer) or ""
+
+			-- Remove final newline zenity adds
+			abs_path = string.match(abs_path, "^[^\n]+") or ""
+			if #abs_path == 0 then
+				return
+			end
+
+			if abs_path == core.project_dir then
+				return
+			end
+			os.execute(string.format("%q %q", EXEFILE, abs_path))
+		end)
+	end,
+
+	["gui-filepicker:change-project-folder"] = function()
+		local zen, proc_err = process.start({
+			"zenity",
+			"--file-selection",
+			"--directory",
+		}, { stdout = process.REDIRECT_PIPE })
+		if not zen then
+			core.error("Unable to run zenity: %s", proc_err)
+			return
+		end
+
+		-- Run this in a coroutine, so we don't block the UI
+		core.add_thread(function()
+			local buffer = {}
+			while zen:running() do
+				local buf = zen:read_stdout()
+				if buf and #buf > 0 then
+					table.insert(buffer, buf)
+				end
+				coroutine.yield()
+			end
+			local abs_path = table.concat(buffer) or ""
+
+			-- Remove final newline zenity adds
+			abs_path = string.match(abs_path, "^[^\n]+") or ""
+			if #abs_path == 0 then
+				return
+			end
+
+			if abs_path == core.project_dir then
+				return
+			end
+			core.confirm_close_docs(core.docs, function(dirpath)
+				core.open_folder_project(dirpath)
+			end, abs_path)
+		end)
+	end,
+
+	["gui-filepicker:add-directory"] = function()
+		local zen, proc_err = process.start({
+			"zenity",
+			"--file-selection",
+			"--directory",
+		}, { stdout = process.REDIRECT_PIPE })
+		if not zen then
+			core.error("Unable to run zenity: %s", proc_err)
+			return
+		end
+
+		-- Run this in a coroutine, so we don't block the UI
+		core.add_thread(function()
+			local buffer = {}
+			while zen:running() do
+				local buf = zen:read_stdout()
+				if buf and #buf > 0 then
+					table.insert(buffer, buf)
+				end
+				coroutine.yield()
+			end
+			local abs_path = table.concat(buffer) or ""
+
+			-- Remove final newline zenity adds
+			abs_path = string.match(abs_path, "^[^\n]+") or ""
+			if #abs_path == 0 then
+				return
+			end
+
+			if abs_path == core.project_dir then
+				return
+			end
+			core.add_project_directory(system.absolute_path(abs_path))
+		end)
+	end,
+})
+
+command.add("core.docview", {
+
+	["gui-filepicker:save-as"] = function(dv)
+		local text
+		text = text or "new_file"
+		local doc = dv.doc
+		if dv.doc.filename then
+			text = dv.doc.filename
+		end
+		local zen, proc_err = process.start({
+			"zenity",
+			"--file-selection",
+			"--save",
+			"--filename",
+			text,
+		}, { stdout = process.REDIRECT_PIPE })
+		if not zen then
+			core.error("Unable to run zenity: %s", proc_err)
+			return
+		end
+
+		-- Run this in a coroutine, so we don't block the UI
+		core.add_thread(function()
+			local buffer = {}
+			while zen:running() do
+				local buf = zen:read_stdout()
+				if buf and #buf > 0 then
+					table.insert(buffer, buf)
+				end
+				coroutine.yield()
+			end
+			local abs_path = table.concat(buffer) or ""
+
+			-- Remove final newline zenity adds
+			abs_path = string.match(abs_path, "^[^\n]+") or ""
+			if #abs_path == 0 then
+				return
+			end
+			doc:save(abs_path, abs_path)
+			core.log('Saved as "%s"', dv.doc.filename)
+		end)
+	end,
+
+	["gui-filepicker:save"] = function(dv)
+		if dv.doc.filename then
+			command.perform("doc:save")
+		else
+			command.perform("gui-filepicker:save-as")
+		end
+	end,
+})
+
+keymap.add({
+	["ctrl+s"] = "gui-filepicker:save",
+	["ctrl+shift+s"] = "gui-filepicker:save-as",
+	["ctrl+shift+c"] = "gui-filepicker:change-project-folder",
+	["ctrl+o"] = "gui-filepicker:open-file",
+	["ctrl+shift+o"] = "gui-filepicker:open-project-folder",
+})