Adding upstream version 3.3a.upstream/3.3a

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 815 insertions, 0 deletions

diff --git a/popup.c b/popup.c
new file mode 100644
index 0000000..2e57153
--- /dev/null
+++ b/popup.c
@@ -0,0 +1,815 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2020 Nicholas Marriott <nicholas.marriott@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "tmux.h"
+
+struct popup_data {
+	struct client		 *c;
+	struct cmdq_item	 *item;
+	int			  flags;
+	char			 *title;
+
+	struct grid_cell	  border_cell;
+	enum box_lines		  border_lines;
+
+	struct screen		  s;
+	struct grid_cell	  defaults;
+	struct colour_palette	  palette;
+
+	struct job		 *job;
+	struct input_ctx	 *ictx;
+	int			  status;
+	popup_close_cb		  cb;
+	void			 *arg;
+
+	struct menu		 *menu;
+	struct menu_data	 *md;
+	int			  close;
+
+	/* Current position and size. */
+	u_int			  px;
+	u_int			  py;
+	u_int			  sx;
+	u_int			  sy;
+
+	/* Preferred position and size. */
+	u_int			  ppx;
+	u_int			  ppy;
+	u_int			  psx;
+	u_int			  psy;
+
+	enum { OFF, MOVE, SIZE }  dragging;
+	u_int			  dx;
+	u_int			  dy;
+
+	u_int			  lx;
+	u_int			  ly;
+	u_int			  lb;
+};
+
+struct popup_editor {
+	char			*path;
+	popup_finish_edit_cb	 cb;
+	void			*arg;
+};
+
+static const struct menu_item popup_menu_items[] = {
+	{ "Close", 'q', NULL },
+	{ "#{?buffer_name,Paste #[underscore]#{buffer_name},}", 'p', NULL },
+	{ "", KEYC_NONE, NULL },
+	{ "Fill Space", 'F', NULL },
+	{ "Centre", 'C', NULL },
+	{ "", KEYC_NONE, NULL },
+	{ "To Horizontal Pane", 'h', NULL },
+	{ "To Vertical Pane", 'v', NULL },
+
+	{ NULL, KEYC_NONE, NULL }
+};
+
+static const struct menu_item popup_internal_menu_items[] = {
+	{ "Close", 'q', NULL },
+	{ "", KEYC_NONE, NULL },
+	{ "Fill Space", 'F', NULL },
+	{ "Centre", 'C', NULL },
+
+	{ NULL, KEYC_NONE, NULL }
+};
+
+static void
+popup_redraw_cb(const struct tty_ctx *ttyctx)
+{
+	struct popup_data	*pd = ttyctx->arg;
+
+	pd->c->flags |= CLIENT_REDRAWOVERLAY;
+}
+
+static int
+popup_set_client_cb(struct tty_ctx *ttyctx, struct client *c)
+{
+	struct popup_data	*pd = ttyctx->arg;
+
+	if (c != pd->c)
+		return (0);
+	if (pd->c->flags & CLIENT_REDRAWOVERLAY)
+		return (0);
+
+	ttyctx->bigger = 0;
+	ttyctx->wox = 0;
+	ttyctx->woy = 0;
+	ttyctx->wsx = c->tty.sx;
+	ttyctx->wsy = c->tty.sy;
+
+	if (pd->border_lines == BOX_LINES_NONE) {
+		ttyctx->xoff = ttyctx->rxoff = pd->px;
+		ttyctx->yoff = ttyctx->ryoff = pd->py;
+	} else {
+		ttyctx->xoff = ttyctx->rxoff = pd->px + 1;
+		ttyctx->yoff = ttyctx->ryoff = pd->py + 1;
+	}
+
+	return (1);
+}
+
+static void
+popup_init_ctx_cb(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
+{
+	struct popup_data	*pd = ctx->arg;
+
+	memcpy(&ttyctx->defaults, &pd->defaults, sizeof ttyctx->defaults);
+	ttyctx->palette = &pd->palette;
+	ttyctx->redraw_cb = popup_redraw_cb;
+	ttyctx->set_client_cb = popup_set_client_cb;
+	ttyctx->arg = pd;
+}
+
+static struct screen *
+popup_mode_cb(__unused struct client *c, void *data, u_int *cx, u_int *cy)
+{
+	struct popup_data	*pd = data;
+
+	if (pd->md != NULL)
+		return (menu_mode_cb(c, pd->md, cx, cy));
+
+	if (pd->border_lines == BOX_LINES_NONE) {
+		*cx = pd->px + pd->s.cx;
+		*cy = pd->py + pd->s.cy;
+	} else {
+		*cx = pd->px + 1 + pd->s.cx;
+		*cy = pd->py + 1 + pd->s.cy;
+	}
+	return (&pd->s);
+}
+
+/* Return parts of the input range which are not obstructed by the popup. */
+static void
+popup_check_cb(struct client* c, void *data, u_int px, u_int py, u_int nx,
+    struct overlay_ranges *r)
+{
+	struct popup_data	*pd = data;
+	struct overlay_ranges	 or[2];
+	u_int			 i, j, k = 0;
+
+	if (pd->md != NULL) {
+		/* Check each returned range for the menu against the popup. */
+		menu_check_cb(c, pd->md, px, py, nx, r);
+		for (i = 0; i < 2; i++) {
+			server_client_overlay_range(pd->px, pd->py, pd->sx,
+			    pd->sy, r->px[i], py, r->nx[i], &or[i]);
+		}
+
+		/*
+		 * or has up to OVERLAY_MAX_RANGES non-overlapping ranges,
+		 * ordered from left to right. Collect them in the output.
+		 */
+		for (i = 0; i < 2; i++) {
+			/* Each or[i] only has 2 ranges. */
+			for (j = 0; j < 2; j++) {
+				if (or[i].nx[j] > 0) {
+					r->px[k] = or[i].px[j];
+					r->nx[k] = or[i].nx[j];
+					k++;
+				}
+			}
+		}
+
+		/* Zero remaining ranges if any. */
+		for (i = k; i < OVERLAY_MAX_RANGES; i++) {
+			r->px[i] = 0;
+			r->nx[i] = 0;
+		}
+
+		return;
+	}
+
+	server_client_overlay_range(pd->px, pd->py, pd->sx, pd->sy, px, py, nx,
+	    r);
+}
+
+static void
+popup_draw_cb(struct client *c, void *data, struct screen_redraw_ctx *rctx)
+{
+	struct popup_data	*pd = data;
+	struct tty		*tty = &c->tty;
+	struct screen		 s;
+	struct screen_write_ctx	 ctx;
+	u_int			 i, px = pd->px, py = pd->py;
+	struct colour_palette	*palette = &pd->palette;
+	struct grid_cell	 defaults;
+
+	screen_init(&s, pd->sx, pd->sy, 0);
+	screen_write_start(&ctx, &s);
+	screen_write_clearscreen(&ctx, 8);
+
+	if (pd->border_lines == BOX_LINES_NONE) {
+		screen_write_cursormove(&ctx, 0, 0, 0);
+		screen_write_fast_copy(&ctx, &pd->s, 0, 0, pd->sx, pd->sy);
+	} else if (pd->sx > 2 && pd->sy > 2) {
+		screen_write_box(&ctx, pd->sx, pd->sy, pd->border_lines,
+		    &pd->border_cell, pd->title);
+		screen_write_cursormove(&ctx, 1, 1, 0);
+		screen_write_fast_copy(&ctx, &pd->s, 0, 0, pd->sx - 2,
+		    pd->sy - 2);
+	}
+	screen_write_stop(&ctx);
+
+	memcpy(&defaults, &pd->defaults, sizeof defaults);
+	if (defaults.fg == 8)
+		defaults.fg = palette->fg;
+	if (defaults.bg == 8)
+		defaults.bg = palette->bg;
+
+	if (pd->md != NULL) {
+		c->overlay_check = menu_check_cb;
+		c->overlay_data = pd->md;
+	} else {
+		c->overlay_check = NULL;
+		c->overlay_data = NULL;
+	}
+	for (i = 0; i < pd->sy; i++) {
+		tty_draw_line(tty, &s, 0, i, pd->sx, px, py + i, &defaults,
+		    palette);
+	}
+	if (pd->md != NULL) {
+		c->overlay_check = NULL;
+		c->overlay_data = NULL;
+		menu_draw_cb(c, pd->md, rctx);
+	}
+	c->overlay_check = popup_check_cb;
+	c->overlay_data = pd;
+}
+
+static void
+popup_free_cb(struct client *c, void *data)
+{
+	struct popup_data	*pd = data;
+	struct cmdq_item	*item = pd->item;
+
+	if (pd->md != NULL)
+		menu_free_cb(c, pd->md);
+
+	if (pd->cb != NULL)
+		pd->cb(pd->status, pd->arg);
+
+	if (item != NULL) {
+		if (cmdq_get_client(item) != NULL &&
+		    cmdq_get_client(item)->session == NULL)
+			cmdq_get_client(item)->retval = pd->status;
+		cmdq_continue(item);
+	}
+	server_client_unref(pd->c);
+
+	if (pd->job != NULL)
+		job_free(pd->job);
+	input_free(pd->ictx);
+
+	screen_free(&pd->s);
+	colour_palette_free(&pd->palette);
+
+	free(pd->title);
+	free(pd);
+}
+
+static void
+popup_resize_cb(__unused struct client *c, void *data)
+{
+	struct popup_data	*pd = data;
+	struct tty		*tty = &c->tty;
+
+	if (pd == NULL)
+		return;
+	if (pd->md != NULL)
+		menu_free_cb(c, pd->md);
+
+	/* Adjust position and size. */
+	if (pd->psy > tty->sy)
+		pd->sy = tty->sy;
+	else
+		pd->sy = pd->psy;
+	if (pd->psx > tty->sx)
+		pd->sx = tty->sx;
+	else
+		pd->sx = pd->psx;
+	if (pd->ppy + pd->sy > tty->sy)
+		pd->py = tty->sy - pd->sy;
+	else
+		pd->py = pd->ppy;
+	if (pd->ppx + pd->sx > tty->sx)
+		pd->px = tty->sx - pd->sx;
+	else
+		pd->px = pd->ppx;
+
+	/* Avoid zero size screens. */
+	if (pd->border_lines == BOX_LINES_NONE) {
+		screen_resize(&pd->s, pd->sx, pd->sy, 0);
+		if (pd->job != NULL)
+			job_resize(pd->job, pd->sx, pd->sy );
+	} else if (pd->sx > 2 && pd->sy > 2) {
+		screen_resize(&pd->s, pd->sx - 2, pd->sy - 2, 0);
+		if (pd->job != NULL)
+			job_resize(pd->job, pd->sx - 2, pd->sy - 2);
+	}
+}
+
+static void
+popup_make_pane(struct popup_data *pd, enum layout_type type)
+{
+	struct client		*c = pd->c;
+	struct session		*s = c->session;
+	struct window		*w = s->curw->window;
+	struct layout_cell	*lc;
+	struct window_pane	*wp = w->active, *new_wp;
+	u_int			 hlimit;
+	const char		*shell;
+
+	window_unzoom(w);
+
+	lc = layout_split_pane(wp, type, -1, 0);
+	hlimit = options_get_number(s->options, "history-limit");
+	new_wp = window_add_pane(wp->window, NULL, hlimit, 0);
+	layout_assign_pane(lc, new_wp, 0);
+
+	new_wp->fd = job_transfer(pd->job, &new_wp->pid, new_wp->tty,
+	    sizeof new_wp->tty);
+	pd->job = NULL;
+
+	screen_set_title(&pd->s, new_wp->base.title);
+	screen_free(&new_wp->base);
+	memcpy(&new_wp->base, &pd->s, sizeof wp->base);
+	screen_resize(&new_wp->base, new_wp->sx, new_wp->sy, 1);
+	screen_init(&pd->s, 1, 1, 0);
+
+	shell = options_get_string(s->options, "default-shell");
+	if (!checkshell(shell))
+		shell = _PATH_BSHELL;
+	new_wp->shell = xstrdup(shell);
+
+	window_pane_set_event(new_wp);
+	window_set_active_pane(w, new_wp, 1);
+	new_wp->flags |= PANE_CHANGED;
+
+	pd->close = 1;
+}
+
+static void
+popup_menu_done(__unused struct menu *menu, __unused u_int choice,
+    key_code key, void *data)
+{
+	struct popup_data	*pd = data;
+	struct client		*c = pd->c;
+	struct paste_buffer	*pb;
+	const char		*buf;
+	size_t			 len;
+
+	pd->md = NULL;
+	pd->menu = NULL;
+	server_redraw_client(pd->c);
+
+	switch (key) {
+	case 'p':
+		pb = paste_get_top(NULL);
+		if (pb != NULL) {
+			buf = paste_buffer_data(pb, &len);
+			bufferevent_write(job_get_event(pd->job), buf, len);
+		}
+		break;
+	case 'F':
+		pd->sx = c->tty.sx;
+		pd->sy = c->tty.sy;
+		pd->px = 0;
+		pd->py = 0;
+		server_redraw_client(c);
+		break;
+	case 'C':
+		pd->px = c->tty.sx / 2 - pd->sx / 2;
+		pd->py = c->tty.sy / 2 - pd->sy / 2;
+		server_redraw_client(c);
+		break;
+	case 'h':
+		popup_make_pane(pd, LAYOUT_LEFTRIGHT);
+		break;
+	case 'v':
+		popup_make_pane(pd, LAYOUT_TOPBOTTOM);
+		break;
+	case 'q':
+		pd->close = 1;
+		break;
+	}
+}
+
+static void
+popup_handle_drag(struct client *c, struct popup_data *pd,
+    struct mouse_event *m)
+{
+	u_int	px, py;
+
+	if (!MOUSE_DRAG(m->b))
+		pd->dragging = OFF;
+	else if (pd->dragging == MOVE) {
+		if (m->x < pd->dx)
+			px = 0;
+		else if (m->x - pd->dx + pd->sx > c->tty.sx)
+			px = c->tty.sx - pd->sx;
+		else
+			px = m->x - pd->dx;
+		if (m->y < pd->dy)
+			py = 0;
+		else if (m->y - pd->dy + pd->sy > c->tty.sy)
+			py = c->tty.sy - pd->sy;
+		else
+			py = m->y - pd->dy;
+		pd->px = px;
+		pd->py = py;
+		pd->dx = m->x - pd->px;
+		pd->dy = m->y - pd->py;
+		pd->ppx = px;
+		pd->ppy = py;
+		server_redraw_client(c);
+	} else if (pd->dragging == SIZE) {
+		if (pd->border_lines == BOX_LINES_NONE) {
+			if (m->x < pd->px + 1)
+				return;
+			if (m->y < pd->py + 1)
+				return;
+		} else {
+			if (m->x < pd->px + 3)
+				return;
+			if (m->y < pd->py + 3)
+				return;
+		}
+		pd->sx = m->x - pd->px;
+		pd->sy = m->y - pd->py;
+		pd->psx = pd->sx;
+		pd->psy = pd->sy;
+
+		if (pd->border_lines == BOX_LINES_NONE) {
+			screen_resize(&pd->s, pd->sx, pd->sy, 0);
+			if (pd->job != NULL)
+				job_resize(pd->job, pd->sx, pd->sy);
+		} else {
+			screen_resize(&pd->s, pd->sx - 2, pd->sy - 2, 0);
+			if (pd->job != NULL)
+				job_resize(pd->job, pd->sx - 2, pd->sy - 2);
+		}
+		server_redraw_client(c);
+	}
+}
+
+static int
+popup_key_cb(struct client *c, void *data, struct key_event *event)
+{
+	struct popup_data	*pd = data;
+	struct mouse_event	*m = &event->m;
+	const char		*buf;
+	size_t			 len;
+	u_int			 px, py, x;
+	enum { NONE, LEFT, RIGHT, TOP, BOTTOM } border = NONE;
+
+	if (pd->md != NULL) {
+		if (menu_key_cb(c, pd->md, event) == 1) {
+			pd->md = NULL;
+			pd->menu = NULL;
+			if (pd->close)
+				server_client_clear_overlay(c);
+			else
+				server_redraw_client(c);
+		}
+		return (0);
+	}
+
+	if (KEYC_IS_MOUSE(event->key)) {
+		if (pd->dragging != OFF) {
+			popup_handle_drag(c, pd, m);
+			goto out;
+		}
+		if (m->x < pd->px ||
+		    m->x > pd->px + pd->sx - 1 ||
+		    m->y < pd->py ||
+		    m->y > pd->py + pd->sy - 1) {
+			if (MOUSE_BUTTONS(m->b) == MOUSE_BUTTON_3)
+				goto menu;
+			return (0);
+		}
+		if (pd->border_lines != BOX_LINES_NONE) {
+			if (m->x == pd->px)
+				border = LEFT;
+			else if (m->x == pd->px + pd->sx - 1)
+				border = RIGHT;
+			else if (m->y == pd->py)
+				border = TOP;
+			else if (m->y == pd->py + pd->sy - 1)
+				border = BOTTOM;
+		}
+		if ((m->b & MOUSE_MASK_MODIFIERS) == 0 &&
+		    MOUSE_BUTTONS(m->b) == MOUSE_BUTTON_3 &&
+		    (border == LEFT || border == TOP))
+		    goto menu;
+		if (((m->b & MOUSE_MASK_MODIFIERS) == MOUSE_MASK_META) ||
+		    border != NONE) {
+			if (!MOUSE_DRAG(m->b))
+				goto out;
+			if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_1)
+				pd->dragging = MOVE;
+			else if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_3)
+				pd->dragging = SIZE;
+			pd->dx = m->lx - pd->px;
+			pd->dy = m->ly - pd->py;
+			goto out;
+		}
+	}
+	if ((((pd->flags & (POPUP_CLOSEEXIT|POPUP_CLOSEEXITZERO)) == 0) ||
+	    pd->job == NULL) &&
+	    (event->key == '\033' || event->key == '\003'))
+		return (1);
+	if (pd->job != NULL) {
+		if (KEYC_IS_MOUSE(event->key)) {
+			/* Must be inside, checked already. */
+			if (pd->border_lines == BOX_LINES_NONE) {
+				px = m->x - pd->px;
+				py = m->y - pd->py;
+			} else {
+				px = m->x - pd->px - 1;
+				py = m->y - pd->py - 1;
+			}
+			if (!input_key_get_mouse(&pd->s, m, px, py, &buf, &len))
+				return (0);
+			bufferevent_write(job_get_event(pd->job), buf, len);
+			return (0);
+		}
+		input_key(&pd->s, job_get_event(pd->job), event->key);
+	}
+	return (0);
+
+menu:
+	pd->menu = menu_create("");
+	if (pd->flags & POPUP_INTERNAL) {
+		menu_add_items(pd->menu, popup_internal_menu_items, NULL, c,
+		    NULL);
+	} else
+		menu_add_items(pd->menu, popup_menu_items, NULL, c, NULL);
+	if (m->x >= (pd->menu->width + 4) / 2)
+		x = m->x - (pd->menu->width + 4) / 2;
+	else
+		x = 0;
+	pd->md = menu_prepare(pd->menu, 0, NULL, x, m->y, c, NULL,
+	    popup_menu_done, pd);
+	c->flags |= CLIENT_REDRAWOVERLAY;
+
+out:
+	pd->lx = m->x;
+	pd->ly = m->y;
+	pd->lb = m->b;
+	return (0);
+}
+
+static void
+popup_job_update_cb(struct job *job)
+{
+	struct popup_data	*pd = job_get_data(job);
+	struct evbuffer		*evb = job_get_event(job)->input;
+	struct client		*c = pd->c;
+	struct screen		*s = &pd->s;
+	void			*data = EVBUFFER_DATA(evb);
+	size_t			 size = EVBUFFER_LENGTH(evb);
+
+	if (size == 0)
+		return;
+
+	if (pd->md != NULL) {
+		c->overlay_check = menu_check_cb;
+		c->overlay_data = pd->md;
+	} else {
+		c->overlay_check = NULL;
+		c->overlay_data = NULL;
+	}
+	input_parse_screen(pd->ictx, s, popup_init_ctx_cb, pd, data, size);
+	c->overlay_check = popup_check_cb;
+	c->overlay_data = pd;
+
+	evbuffer_drain(evb, size);
+}
+
+static void
+popup_job_complete_cb(struct job *job)
+{
+	struct popup_data	*pd = job_get_data(job);
+	int			 status;
+
+	status = job_get_status(pd->job);
+	if (WIFEXITED(status))
+		pd->status = WEXITSTATUS(status);
+	else if (WIFSIGNALED(status))
+		pd->status = WTERMSIG(status);
+	else
+		pd->status = 0;
+	pd->job = NULL;
+
+	if ((pd->flags & POPUP_CLOSEEXIT) ||
+	    ((pd->flags & POPUP_CLOSEEXITZERO) && pd->status == 0))
+		server_client_clear_overlay(pd->c);
+}
+
+int
+popup_display(int flags, enum box_lines lines, struct cmdq_item *item, u_int px,
+    u_int py, u_int sx, u_int sy, struct environ *env, const char *shellcmd,
+    int argc, char **argv, const char *cwd, const char *title, struct client *c,
+    struct session *s, const char* style, const char* border_style,
+    popup_close_cb cb, void *arg)
+{
+	struct popup_data	*pd;
+	u_int			 jx, jy;
+	struct options		*o;
+	struct style		 sytmp;
+
+	if (s != NULL)
+		o = s->curw->window->options;
+	else
+		o = c->session->curw->window->options;
+
+	if (lines == BOX_LINES_DEFAULT)
+		lines = options_get_number(o, "popup-border-lines");
+	if (lines == BOX_LINES_NONE) {
+		if (sx < 1 || sy < 1)
+			return (-1);
+		jx = sx;
+		jy = sy;
+	} else {
+		if (sx < 3 || sy < 3)
+			return (-1);
+		jx = sx - 2;
+		jy = sy - 2;
+	}
+	if (c->tty.sx < sx || c->tty.sy < sy)
+		return (-1);
+
+	pd = xcalloc(1, sizeof *pd);
+	pd->item = item;
+	pd->flags = flags;
+	if (title != NULL)
+		pd->title = xstrdup(title);
+
+	pd->c = c;
+	pd->c->references++;
+
+	pd->cb = cb;
+	pd->arg = arg;
+	pd->status = 128 + SIGHUP;
+
+	pd->border_lines = lines;
+	memcpy(&pd->border_cell, &grid_default_cell, sizeof pd->border_cell);
+	style_apply(&pd->border_cell, o, "popup-border-style", NULL);
+	if (border_style != NULL) {
+		style_set(&sytmp, &grid_default_cell);
+		if (style_parse(&sytmp, &pd->border_cell, border_style) == 0) {
+			pd->border_cell.fg = sytmp.gc.fg;
+			pd->border_cell.bg = sytmp.gc.bg;
+		}
+	}
+	pd->border_cell.attr = 0;
+
+	screen_init(&pd->s, jx, jy, 0);
+	colour_palette_init(&pd->palette);
+	colour_palette_from_option(&pd->palette, global_w_options);
+
+	memcpy(&pd->defaults, &grid_default_cell, sizeof pd->defaults);
+	style_apply(&pd->defaults, o, "popup-style", NULL);
+	if (style != NULL) {
+		style_set(&sytmp, &grid_default_cell);
+		if (style_parse(&sytmp, &pd->defaults, style) == 0) {
+			pd->defaults.fg = sytmp.gc.fg;
+			pd->defaults.bg = sytmp.gc.bg;
+		}
+	}
+	pd->defaults.attr = 0;
+
+	pd->px = px;
+	pd->py = py;
+	pd->sx = sx;
+	pd->sy = sy;
+
+	pd->ppx = px;
+	pd->ppy = py;
+	pd->psx = sx;
+	pd->psy = sy;
+
+	pd->job = job_run(shellcmd, argc, argv, env, s, cwd,
+	    popup_job_update_cb, popup_job_complete_cb, NULL, pd,
+	    JOB_NOWAIT|JOB_PTY|JOB_KEEPWRITE, jx, jy);
+	pd->ictx = input_init(NULL, job_get_event(pd->job), &pd->palette);
+
+	server_client_set_overlay(c, 0, popup_check_cb, popup_mode_cb,
+	    popup_draw_cb, popup_key_cb, popup_free_cb, popup_resize_cb, pd);
+	return (0);
+}
+
+static void
+popup_editor_free(struct popup_editor *pe)
+{
+	unlink(pe->path);
+	free(pe->path);
+	free(pe);
+}
+
+static void
+popup_editor_close_cb(int status, void *arg)
+{
+	struct popup_editor	*pe = arg;
+	FILE			*f;
+	char			*buf = NULL;
+	off_t			 len = 0;
+
+	if (status != 0) {
+		pe->cb(NULL, 0, pe->arg);
+		popup_editor_free(pe);
+		return;
+	}
+
+	f = fopen(pe->path, "r");
+	if (f != NULL) {
+		fseeko(f, 0, SEEK_END);
+		len = ftello(f);
+		fseeko(f, 0, SEEK_SET);
+
+		if (len == 0 ||
+		    (uintmax_t)len > (uintmax_t)SIZE_MAX ||
+		    (buf = malloc(len)) == NULL ||
+		    fread(buf, len, 1, f) != 1) {
+			free(buf);
+			buf = NULL;
+			len = 0;
+		}
+		fclose(f);
+	}
+	pe->cb(buf, len, pe->arg); /* callback now owns buffer */
+	popup_editor_free(pe);
+}
+
+int
+popup_editor(struct client *c, const char *buf, size_t len,
+    popup_finish_edit_cb cb, void *arg)
+{
+	struct popup_editor	*pe;
+	int			 fd;
+	FILE			*f;
+	char			*cmd;
+	char			 path[] = _PATH_TMP "tmux.XXXXXXXX";
+	const char		*editor;
+	u_int			 px, py, sx, sy;
+
+	editor = options_get_string(global_options, "editor");
+	if (*editor == '\0')
+		return (-1);
+
+	fd = mkstemp(path);
+	if (fd == -1)
+		return (-1);
+	f = fdopen(fd, "w");
+	if (fwrite(buf, len, 1, f) != 1) {
+		fclose(f);
+		return (-1);
+	}
+	fclose(f);
+
+	pe = xcalloc(1, sizeof *pe);
+	pe->path = xstrdup(path);
+	pe->cb = cb;
+	pe->arg = arg;
+
+	sx = c->tty.sx * 9 / 10;
+	sy = c->tty.sy * 9 / 10;
+	px = (c->tty.sx / 2) - (sx / 2);
+	py = (c->tty.sy / 2) - (sy / 2);
+
+	xasprintf(&cmd, "%s %s", editor, path);
+	if (popup_display(POPUP_INTERNAL|POPUP_CLOSEEXIT, BOX_LINES_DEFAULT,
+	    NULL, px, py, sx, sy, NULL, cmd, 0, NULL, _PATH_TMP, NULL, c, NULL,
+	    NULL, NULL, popup_editor_close_cb, pe) != 0) {
+		popup_editor_free(pe);
+		free(cmd);
+		return (-1);
+	}
+	free(cmd);
+	return (0);
+}