# gWidgetsWWW2 GUI for mkin {{{1 # Copyright (C) 2013,2014,2015 Johannes Ranke # Portions of this file are copyright (C) 2013 Eurofins Regulatory AG, Switzerland # Contact: jranke@uni-bremen.de # This file is part of the R package gmkin # gmkin is free software: you can redistribute it and/or modify it under the # terms of the GNU General Public License as published by the Free Software # Foundation, either version 3 of the License, or (at your option) any later # version. # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more # details. # You should have received a copy of the GNU General Public License along with # this program. If not, see # Configuration {{{1 left_width = 250 right_width = 500 save_keybinding = "Ctrl-X" gcb_observed_width = 100 gcb_type_width = 70 gcb_to_width = 160 gcb_sink_width = 70 # Set the GUI title and create the basic widget layout {{{1 # Three panel layout {{{2 window_title <- paste0("gmkin ", packageVersion("gmkin"), "- Browser based GUI for kinetic evaluations using mkin") w <- gwindow(window_title) sb <- gstatusbar(paste("Powered by gWidgetsWWW2 (ExtJS, Rook)", "and mkin (FME, deSolve and minpack.lm)", "--- Working directory is", getwd()), cont = w) bl <- gborderlayout(cont = w, #title = list(center = "Work", east = "Results"), panels = c("center", "west", "east"), collapsible = list(west = FALSE)) bl$set_panel_size("west", left_width) bl$set_panel_size("east", right_width) center <- gnotebook(cont = bl, where = "center") left <- gvbox(cont = bl, use.scrollwindow = TRUE, where = "west") right <- gnotebook(cont = bl, use.scrollwindow = TRUE, where = "east") # Helper functions {{{1 # Override function for making it possible to override original data points using the GUI {{{2 override <- function(d) { if (!is.null(d$override)) { d_new <- data.frame(name = d$name, time = d$time, value = ifelse(is.na(d$override), d$value, d$override), err = d$err) return(d_new) } else { return(d) } } # Update dataframe with projects {{{2 update_p.df <- function() { wd_projects <- gsub(".gmkinws", "", dir(pattern = ".gmkinws$")) if (length(wd_projects) > 0) { p.df.wd <- data.frame(Name = wd_projects, Source = rep("working directory", length(wd_projects)), stringsAsFactors = FALSE) p.df <<- rbind(p.df.package, p.df.wd) } else { p.df <<- p.df.package } p.gtable[,] <- p.df p.line.import.p[,] <- c("", p.df$Name) } # Update dataframe with datasets {{{2 update_ds.df <- function() { if (is.na(ws$ds[1])) ds.df <<- ds.df.empty else ds.df <<- data.frame(Title = sapply(ws$ds, function(x) x$title)) ds.gtable[,] <- ds.df update_ds_editor() ds.delete$call_Ext("disable") ds.copy$call_Ext("disable") } # Update dataframe with models {{{2 update_m.df <- function() { if (is.na(ws$m[1])) m.df <<- m.df.empty else m.df <<- data.frame(Name = sapply(ws$m, function(x) x$name)) m.gtable[,] <- m.df update_m_editor() m.delete$call_Ext("disable") m.copy$call_Ext("disable") } # Update dataframe with fits {{{2 update_f.df <- function() { f.df <- f.df.empty if (!is.na(ftmp[1])) { f.df[1, "Name"] <- c("Temporary (not fitted)") } if (!is.na(ws$f[1])) { f.df.ws <- data.frame(Name = sapply(ws$f, function(x) x$name), stringsAsFactors = FALSE) f.df <- rbind(f.df, f.df.ws) } f.df <<- f.df } # Generate the initial workspace {{{1 # Project workspace {{{2 ws <- gmkinws$new() ws.import <- NA # Initialise meta data objects so assignments within functions using <<- will {{{2 # update them in the right environment. # Also create initial versions of meta data in order to be able to clear the workspace p.df <- p.df.package <- data.frame(Name = c("FOCUS_2006", "FOCUS_2006_Z"), Source = rep("gmkin package", 2), stringsAsFactors = FALSE) # Datasets {{{2 ds.empty <- mkinds$new( title = "New dataset", time_unit = "", unit = "", data = data.frame( name = rep(c("parent", "m1"), each = 5), time = rep(c(0, 1, 4, 7, 14), 2), value = c(100, rep(NA, 9)), override = "NA", err = 1, stringsAsFactors = FALSE)) ds.cur <- ds.empty$clone() ds.df <- ds.df.empty <- data.frame(Title = "", stringsAsFactors = FALSE) # Models {{{2 m.empty <- mkinmod(parent = mkinsub("SFO")) m.empty$name <- "" m.empty$spec <- list() m.cur <- m.empty m.df <- m.df.empty <- data.frame(Name = "", stringsAsFactors = FALSE) # Fits {{{2 f.df <- f.df.empty <- data.frame(Name = "", stringsAsFactors = FALSE) ftmp <- NA # left: Explorer tables {{{1 # Frames {{{2 p.gf <- gframe("Projects", cont = left, horizontal = FALSE) ds.gf <- gframe("Datasets", cont = left) m.gf <- gframe("Models", cont = left) c.gf <- gframe("Configuration", cont = left, horizontal = FALSE) f.gf <- gframe("Results", cont = left) # Project explorer {{{2 # Initialize project list from the gmkin package and the current working directory # The former must be manually amended if additional workspaces should be available p.gtable <- gtable(p.df, cont = p.gf, width = left_width - 10, height = 120) size(p.gtable) <- list(columnWidths = c(130, 100)) p.loaded <- NA # The index of the loaded project. We reset the selection to this when the user # does not confirm p.modified <- FALSE # Keep track of modifications after loading p.switcher <- function(h, ...) { p.cur <- h$row_index # h$row_index for clicked or doubleclick handlers, h$value for change project_switched <- FALSE switch_project <- function() { Name <- p.df[p.cur, "Name"] if (p.df[p.cur, "Source"] == "working directory") { load(paste0(Name, ".gmkinws")) ws <<- ws } else { ws <<- get(Name)$clone() } svalue(center) <- 1 svalue(c.ds) <- empty_conf_labels[1] svalue(c.m) <- empty_conf_labels[2] update_p_editor(p.cur) update_ds.df() update_m.df() m.gtable[,] <<- m.df update_f.df() f.gtable[,] <<- f.df p.loaded <<- p.cur project_switched <- TRUE p.gtable$set_index(p.cur) p.modified <<- FALSE } if (p.modified) { gconfirm("When you switch projects, you loose any unsaved changes. Proceed to switch?", handler = function(h, ...) { switch_project() }) } else { switch_project() } # We can reset the selection only if the project was not # switched. The following code gets executed during the confirmation dialogue, # i.e. before the potential switching if (!project_switched) { if (is.na(p.loaded)) { p.gtable$clear_selection() } else { p.gtable$set_index(p.loaded) } } } addHandlerClicked(p.gtable, p.switcher) # Dataset explorer {{{2 ds.switcher <- function(h, ...) { ds.i <- h$row_index svalue(c.ds) <- ds.df[ds.i, "Title"] ds.cur <<- ws$ds[[ds.i]] update_ds_editor() ds.delete$call_Ext("enable") ds.copy$call_Ext("enable") svalue(center) <- 2 svalue(right) <- 2 } ds.gtable <- gtable(ds.df, cont = ds.gf, width = left_width - 10, height = 160) addHandlerClicked(ds.gtable, ds.switcher) # Model explorer {{{2 m.switcher <- function(h, ...) { m.i <- h$row_index svalue(c.m) <- m.df[m.i, "Name"] m.cur <<- ws$m[[m.i]] update_m_editor() m.delete$call_Ext("enable") m.copy$call_Ext("enable") svalue(center) <- 3 svalue(right) <- 3 } m.gtable <- gtable(m.df, cont = m.gf, width = left_width - 10, height = 160) addHandlerClicked(m.gtable, m.switcher) # Fit explorer {{{2 f.switcher <- function(h, ...) { f.cur <<- h$row_index - 1 if (f.cur > 0) { ftmp <<- ws$f[[ws$f.cur]] stmp <<- ws$s[[ws$f.cur]] c.ds$call_Ext("setText", paste0("", ftmp$ds$title, ""), FALSE) c.m$call_Ext("setText", paste0("", ftmp$m$name, ""), FALSE) } #update_f_conf() #update_f_results() svalue(center) <- 5 } f.gtable <- gtable(f.df, cont = f.gf, width = left_width - 10, height = 160) addHandlerClicked(f.gtable, f.switcher) # Configuration {{{2 empty_conf_labels <- paste0("Current ", c("dataset", "model"), "") c.ds <- glabel(empty_conf_labels[1], cont = c.gf) c.m <- glabel(empty_conf_labels[2], cont = c.gf) c.conf <- gbutton("Configure fit", cont = c.gf, handler = function(h, ...) svalue(center) <- 4) # center: Project editor {{{1 p.editor <- gframe("", horizontal = FALSE, cont = center, label = "Project") # Line with buttons {{{2 p.line.buttons <- ggroup(cont = p.editor, horizontal = TRUE) p.new <- gbutton("New project", cont = p.line.buttons, handler = function(h, ...) { project_name <- "New project" svalue(p.name) <- project_name svalue(p.filename) <- file.path(getwd(), paste0(project_name, ".gmkinws")) svalue(p.observed) <- "" p.delete$call_Ext("disable") ws <<- gmkinws$new() update_ds.df() update_m.df() m.gtable[,] <- m.df update_f.df() f.gtable[,] <- f.df }) p.delete.handler = function(h, ...) { filename <- file.path(getwd(), paste0(svalue(p.name), ".gmkinws")) gconfirm(paste0("Are you sure you want to delete ", filename, "?"), parent = w, handler = function(h, ...) { if (inherits(try(unlink(filename)), "try-error")) { gmessage("Deleting failed for an unknown reason", cont = w) } else { svalue(sb) <- paste("Deleted", filename) svalue(p.filename) <- "" svalue(p.observed) <- "" p.delete$call_Ext("disable") update_p.df() } }) } p.delete <- gbutton("Delete project", cont = p.line.buttons, handler = p.delete.handler, ext.args = list(disabled = TRUE)) # Project name {{{2 p.line.name <- ggroup(cont = p.editor, horizontal = TRUE) p.name <- gedit("New project", label = "Project name", width = 50, cont = p.line.name) p.save.action <- gaction("Save", parent = w, handler = function(h, ...) { filename <- paste0(svalue(p.name), ".gmkinws") try_to_save <- function (filename) { if (!inherits(try(save(ws, file = filename)), "try-error")) { svalue(sb) <- paste("Saved project to file", filename, "in working directory", getwd()) update_p.df() p.modified <<- FALSE } else { gmessage("Saving failed for an unknown reason", parent = w) } } if (file.exists(filename)) { gconfirm(paste("File", filename, "exists. Overwrite?"), parent = w, handler = function(h, ...) { try_to_save(filename) }) } else { try_to_save(filename) } }) p.save.action$add_keybinding(save_keybinding) p.save <- gbutton(action = p.save.action, cont = p.line.name) tooltip(p.save) <- paste("Press", save_keybinding, "to save") update_p_editor <- function(p.cur) { project_name <- as.character(p.df[p.cur, "Name"]) svalue(p.name) <- project_name if (p.df[p.cur, "Source"] == "gmkin package") { svalue(p.filename) <- "" p.delete$call_Ext("disable") } else { svalue(p.filename) <- file.path(getwd(), paste0(project_name, ".gmkinws")) p.delete$call_Ext("enable") } svalue(p.observed) <- paste(ws$observed, collapse = ", ") } # Working directory {{{2 p.line.wd <- ggroup(cont = p.editor, horizontal = TRUE) wd_handler <- function(h, ...) { target_wd <- svalue(p.wde) wd <- try(setwd(target_wd)) if (inherits(wd, "try-error")) { gmessage(paste("Could not set working directory to", target_wd), parent = w) } else { svalue(sb) <- paste("Changed working directory to", wd) update_p.df() } } p.wde <- gedit(getwd(), cont = p.line.wd, label = "Working directory", width = 50) p.wde$add_handler_enter(wd_handler) p.wdb <- gbutton("Change", cont = p.line.wd, handler = wd_handler) tooltip(p.wdb) <- "Edit the box on the left and press enter to change" # File name {{{2 p.line.file <- ggroup(cont = p.editor, horizontal = TRUE) p.filename.gg <- ggroup(width = 135, cont = p.line.file) # for spacing p.filename.label <- glabel("Project file:", cont = p.filename.gg) p.filename <- glabel("", cont = p.line.file) # Observed variables {{{2 p.line.observed <- ggroup(cont = p.editor, horizontal = TRUE) p.observed.gg <- ggroup(width = 135, cont = p.line.observed) # for spacing p.observed.label <- glabel("Observed variables:", cont = p.observed.gg) p.observed <- glabel("", cont = p.line.observed) # Import {{{2 p.line.import <- ggroup(cont = p.editor, horizontal = TRUE) p.line.import.p <- gcombobox(c("", p.df$Name), label = "Import from", cont = p.line.import, handler = function(h, ...) { p.import <- svalue(h$obj, index = TRUE) - 1 Name <- p.df[p.import, "Name"] if (p.df[p.import, "Source"] == "working directory") { load(paste0(Name, ".gmkinws")) ws.import <<- ws } else { ws.import <<- get(Name) } p.line.import.dst[,] <- data.frame(Title = sapply(ws.import$ds, function(x) x$title), stringsAsFactors = FALSE) p.line.import.mt[,] <- data.frame(Name = sapply(ws.import$m, function(x) x$name), stringsAsFactors = FALSE) }) p.line.import.frames <- ggroup(cont = p.editor, horizontal = TRUE) p.line.import.dsf <- gframe("Datasets for import", cont = p.line.import.frames, horizontal = FALSE) p.line.import.dst <- gtable(ds.df.empty, cont = p.line.import.dsf, multiple = TRUE, width = left_width - 10, height = 160, handler = function(h, ...) p.line.import.dsb$call_Ext("enable")) p.line.import.dsb <- gbutton("Import selected", cont = p.line.import.dsf, ext.args = list(disabled = TRUE), handler = function(h, ...) { i <- svalue(p.line.import.dst, index = TRUE) ws$add_ds(ws.import$ds[i]) update_ds.df() svalue(p.observed) <- paste(ws$observed, collapse = ", ") p.modified <<- TRUE } ) p.line.import.mf <- gframe("Models for import", cont = p.line.import.frames, horizontal = FALSE) p.line.import.mt <- gtable(m.df.empty, cont = p.line.import.mf, multiple = TRUE, width = left_width - 10, height = 160, handler = function(h, ...) p.line.import.mb$call_Ext("enable")) p.line.import.mb <- gbutton("Import selected", cont = p.line.import.mf, ext.args = list(disabled = TRUE), handler = function(h, ...) { i <- svalue(p.line.import.mt, index = TRUE) ws$add_m(ws.import$m[i]) update_m.df() m.gtable[,] <- m.df svalue(p.observed) <- paste(ws$observed, collapse = ", ") p.modified <<- TRUE } ) # center: Dataset editor {{{1 ds.editor <- gframe("", horizontal = FALSE, cont = center, label = "Dataset") # Handler functions {{{2 # For top row buttons {{{3 stage_dataset <- function(ds.new) { ds.cur <<- ds.new update_ds_editor() ds.copy$call_Ext("disable") ds.delete$call_Ext("disable") } add_dataset <- function(ds.new) { ws$add_ds(list(ds.new)) update_ds.df() p.modified <<- TRUE } new_dataset_handler <- function(h, ...) { ds.new <- ds.empty$clone() ds.new$title <- "New dataset" stage_dataset(ds.new) } copy_dataset_handler <- function(h, ...) { ds.new <- ds.cur$clone() ds.new$title <- paste("Copy of ", ds.cur$title) stage_dataset(ds.new) } delete_dataset_handler <- function(h, ...) { ds.i <- svalue(ds.gtable, index = TRUE) ws$delete_ds(ds.i) update_ds.df() p.modified <<- TRUE } keep_ds_changes_handler <- function(h, ...) { add_dataset( mkinds$new( title = svalue(ds.title.ge), data = ds.e.gdf[,], time_unit = svalue(ds.e.stu), unit = svalue(ds.e.obu))) update_ds.df() ds.gtable$set_index(length(ws$ds)) update_ds_editor() svalue(p.observed) <- paste(ws$observed, collapse = ", ") } # For populating the dataset editor {{{3 empty_grid_handler <- function(h, ...) { obs <- strsplit(svalue(ds.e.obs), ", ")[[1]] sampling_times_to_parse <- paste0("c(", svalue(ds.e.st), ")") sampling_times <- eval(parse(text = sampling_times_to_parse)) replicates <- as.numeric(svalue(ds.e.rep)) new.data = data.frame( name = rep(obs, each = replicates * length(sampling_times)), time = as.numeric(rep(sampling_times, each = replicates, times = length(obs))), value = as.numeric(NA), override = as.numeric(NA), err = 1, stringsAsFactors = FALSE ) ds.e.gdf[,] <- new.data svalue(right) <- 2 } # For uploading {{{3 tmptextheader <- character(0) load_text_file_with_data <- function(h, ...) { tmptextfile <<- normalizePath(svalue(h$obj), winslash = "/") tmptext <- readLines(tmptextfile, warn = FALSE) tmptextskip <<- 0 for (tmptextline in tmptext) { if (grepl(":|#|/", tmptextline)) tmptextskip <<- tmptextskip + 1 else break() } svalue(ds.e.up.skip) <- tmptextskip if (svalue(ds.e.up.header)) { tmptextheader <<- strsplit(tmptext[tmptextskip + 1], " |\t|;|,")[[1]] } svalue(ds.e.up.wide.time) <- tmptextheader[[1]] svalue(ds.e.up.long.time) <- tmptextheader[[2]] svalue(ds.e.up.text) <- c("
", c(tmptext[1:5], "\n...\n"), "
") visible(ds.e.import) <- TRUE } new_ds_from_csv_handler <- function(h, ...) { tmpd <- try(read.table(tmptextfile, skip = as.numeric(svalue(ds.e.up.skip)), dec = svalue(ds.e.up.dec), sep = switch(svalue(ds.e.up.sep), whitespace = "", ";" = ";", "," = ","), header = svalue(ds.e.up.header), stringsAsFactors = FALSE)) if(svalue(ds.e.up.widelong) == "wide") { tmpdl <- mkin_wide_to_long(tmpd, time = as.character(svalue(ds.e.up.wide.time))) } else { tmpdl <- data.frame( name = tmpd[[svalue(ds.e.up.long.name)]], time = tmpd[[svalue(ds.e.up.long.time)]], value = tmpd[[svalue(ds.e.up.long.value)]]) tmpderr <- tmpd[[svalue(ds.e.up.long.err)]] if (!is.null(tmpderr)) tmpdl$err <- tmpderr } if (class(tmpd) != "try-error") { ds.cur <<- mkinds$new( title = "New import", time_unit = "", unit = "", data = tmpdl) if (is.null(ds.cur$data$err)) ds.cur$data$err <<- 1 update_ds.df() update_ds_editor() } else { galert("Uploading failed", parent = "w") } } # Update the dataset editor {{{3 update_ds_editor <- function() { svalue(ds.title.ge) <- ds.cur$title svalue(ds.e.st) <- paste(ds.cur$sampling_times, collapse = ", ") svalue(ds.e.stu) <- ds.cur$time_unit svalue(ds.e.obs) <- paste(ds.cur$observed, collapse = ", ") svalue(ds.e.obu) <- ds.cur$unit svalue(ds.e.rep) <- ds.cur$replicates ds.e.gdf[,] <- ds.cur$data ds.keep$call_Ext("enable") visible(ds.e.import) <- FALSE svalue(ds.e.up.text) <- "
"
}
# Widget setup {{{2
# Line 1 with buttons {{{3
ds.e.buttons <- ggroup(cont = ds.editor, horizontal = TRUE)
ds.e.new <- gbutton("New dataset", cont = ds.e.buttons, handler = new_dataset_handler)
ds.copy <- gbutton("Copy dataset", cont = ds.e.buttons,
  handler = copy_dataset_handler, ext.args = list(disabled = TRUE))
ds.delete <- gbutton("Delete dataset", cont = ds.e.buttons, 
  handler = delete_dataset_handler, ext.args = list(disabled = TRUE))
ds.keep <- gbutton("Keep changes", cont = ds.e.buttons, handler = keep_ds_changes_handler)
ds.keep$call_Ext("disable")

# Formlayout for meta data {{{3
ds.e.gfl <- gformlayout(cont = ds.editor)
ds.title.ge <- gedit(label = "Dataset title", width = 60, cont = ds.e.gfl)
ds.e.st     <- gedit(width = 60, label = "Sampling times", cont = ds.e.gfl)
ds.e.stu    <- gedit(width = 20, label = "Unit", cont = ds.e.gfl)
ds.e.rep    <- gedit(width = 20, label = "Replicates", cont = ds.e.gfl)
ds.e.obs    <- gedit(width = 60, label = "Observed", cont = ds.e.gfl)
ds.e.obu    <- gedit(width = 20, label = "Unit", cont = ds.e.gfl)
generate_grid.gb <- gbutton("Generate grid for entering kinetic data", cont = ds.editor, 
        handler = empty_grid_handler)
tooltip(generate_grid.gb) <- "Overwrites the kinetic data shown to the right"

# Data upload area {{{3
tmptextfile <- "" # Initialize file name for imported data
tmptextskip <- 0 # Initialize number of lines to be skipped
tmptexttime <- "V1" # Initialize name of time variable if no header row
upload_dataset.gf <- gfile(text = "Upload text file", cont = ds.editor,
        handler = load_text_file_with_data)


# Import options {{{3
ds.e.import <- ggroup(cont = ds.editor, horizontal = FALSE)
visible(ds.e.import) <- FALSE
ds.e.preview <- ggroup(cont = ds.e.import, width = 480,  height = 150,
                      ext.args = list(layout = list(type="vbox", align = "center")))
ds.e.up.text <- ghtml("
", cont = ds.e.preview, width = 400, height = 150)
ds.e.up.import <- gbutton("Import using options specified below", cont = ds.e.import,
                          handler = new_ds_from_csv_handler)
ds.e.up.options <- ggroup(cont = ds.e.import, width = 200, horizontal = FALSE)
ds.e.up.skip <- gedit(tmptextskip, label = "Comment lines", width = 20, cont = ds.e.up.options)
ds.e.up.header <- gcheckbox(cont = ds.e.up.options, label = "Column names",
                            checked = TRUE)
ds.e.up.sep <- gcombobox(c("whitespace", ";", ","), cont = ds.e.up.options, width = 50,
                         selected = 1, label = "Separator")
ds.e.up.dec <- gcombobox(c(".", ","), cont = ds.e.up.options, width = 100,
                         selected = 1, label = "Decimal")
ds.e.up.widelong <- gradio(c("wide", "long"), horizontal = TRUE, width = 100,
                           label = "Format", cont = ds.e.up.options,
                           handler = function(h, ...) {
                             widelong = svalue(h$obj, index = TRUE)
                             svalue(ds.e.up.wlstack) <- widelong
                           })
ds.e.up.wlstack <- gstackwidget(cont = ds.e.import)
ds.e.up.wide <- ggroup(cont = ds.e.up.wlstack, horizontal = FALSE, width = 300)
ds.e.up.wide.time <- gedit(tmptexttime, cont = ds.e.up.wide, label = "Time column")
ds.e.up.long <- ggroup(cont = ds.e.up.wlstack, horizontal = FALSE, width = 300)
ds.e.up.long.name <- gedit("name", cont = ds.e.up.long, label = "Observed variables")
ds.e.up.long.time <- gedit(tmptexttime, cont = ds.e.up.long, label = "Time column")
ds.e.up.long.value <- gedit("value", cont = ds.e.up.long, label = "Value column")
ds.e.up.long.err <- gedit("err", cont = ds.e.up.long, label = "Relative errors")
svalue(ds.e.up.wlstack) <- 1

# center: Model editor {{{1
m.editor  <- gframe("", horizontal = FALSE, cont = center, 
                    label = "Model")
# Handler functions {{{2
# For top row buttons {{{3
stage_model <- function(m.new) {
  m.cur <<- m.new
  update_m_editor()
  m.copy$call_Ext("disable")
  m.delete$call_Ext("disable")
}

add_model <- function(m.new) {
  ws$add_m(list(m.new))
  update_m.df()
  p.modified <<- TRUE
}

new_model_handler <- function(h, ...) {
  m.new <- m.empty
  m.new$name <- "New model"
  stage_model(m.new)
}

copy_model_handler <- function(h, ...) {
  m.new <- m.cur
  m.new$name <- paste("Copy of ", m.cur$title)
  stage_model(m.new)
}
  
delete_model_handler <- function(h, ...) {
  m.i <- svalue(m.gtable, index = TRUE)
  ws$delete_m(m.i)
  update_m.df()
  p.modified <<- TRUE
}

keep_m_changes_handler <- function(h, ...) {
  spec <- list()
  for (obs.i in 1:length(m.e.rows)) {
    to_string <- svalue(m.e.to[[obs.i]])
    if (length(to_string) == 0) to_vector = NULL
    else to_vector = strsplit(svalue(m.e.to[[obs.i]]), ", ")[[1]]
    spec[[obs.i]] <- mkinsub(svalue(m.e.type[[obs.i]]),
                          to = to_vector,
                          sink = svalue(m.e.sink[[obs.i]]))
    names(spec)[[obs.i]] <- svalue(m.e.obs[[obs.i]])
  }
  m.cur <<- mkinmod(use_of_ff = svalue(m.ff.gc), 
                    speclist = spec)
  m.cur$name <<- svalue(m.name.ge) 
  add_model(m.cur)
  svalue(p.observed) <- paste(ws$observed, collapse = ", ")
}
# Add and remove observed variables {{{3
add_observed <- function(obs.i) {
  if (obs.i == length(ws$observed)) {
    m.add_observed$call_Ext("disable")
  }
  m.e.rows[[obs.i]] <<- ggroup(cont = m.editor, horizontal = TRUE)
  m.e.obs[[obs.i]] <<- gcombobox(ws$observed, 
                                 selected = obs.i, 
                                 width = gcb_observed_width,
                                 cont = m.e.rows[[obs.i]])
  obs.types <- if (obs.i == 1) c("SFO", "FOMC", "DFOP", "HS", "SFORB")
    else c("SFO", "SFORB")
  m.e.type[[obs.i]] <<- gcombobox(obs.types, width = gcb_type_width,
                                  selected = 0L, cont = m.e.rows[[obs.i]])
  glabel("to", cont = m.e.rows[[obs.i]]) 
  m.e.to[[obs.i]] <<- gcombobox(ws$observed, selected = 0L,
                                width = gcb_to_width,
                                ext.args = list(multiSelect = TRUE),
                                cont = m.e.rows[[obs.i]])
  m.e.sink[[obs.i]] <<- gcheckbox("Sink", width = gcb_sink_width,
                                  checked = TRUE, cont = m.e.rows[[obs.i]]) 
  if (obs.i > 1) {
    gbutton("Remove observed variable", handler = remove_observed_handler, 
            action = obs.i, cont = m.e.rows[[obs.i]])
  }
}

add_observed_handler <- function(h, ...) {
  obs.i <- length(m.e.rows) + 1
  add_observed(obs.i)
}

remove_observed_handler <- function(h, ...) {
  m.cur$spec[[h$action]] <<- NULL
  update_m_editor()
}
# Update the model editor {{{3
update_m_editor <- function() {
  svalue(m.name.ge) <- m.cur$name
  svalue(m.ff.gc) <- m.cur$use_of_ff
  for (oldrow.i in seq_along(m.e.rows)) {
    delete(m.editor, m.e.rows[[oldrow.i]])
  }
  m.keep$call_Ext("enable")
  m.e.rows <<- m.e.obs <<- m.e.type <<- m.e.to <<- m.e.sink <<- list()
  if (length(m.cur$spec) == length(ws$observed)) {
    m.add_observed$call_Ext("disable")
  } else {
    m.add_observed$call_Ext("enable")
  }
  show_m_spec()
}
# Widget setup {{{2
# Line 1 with buttons {{{3
m.e.buttons <- ggroup(cont = m.editor, horizontal = TRUE)
m.e.new <- gbutton("New model", cont = m.e.buttons, handler = new_model_handler)
m.copy <- gbutton("Copy model", cont = m.e.buttons,
  handler = copy_model_handler, ext.args = list(disabled = TRUE))
m.delete <- gbutton("Delete model", cont = m.e.buttons, 
  handler = delete_model_handler, ext.args = list(disabled = TRUE))
m.keep <- gbutton("Keep changes", cont = m.e.buttons, handler = keep_m_changes_handler)
m.keep$call_Ext("disable")

# Formlayout for meta data {{{3
m.e.gfl <- gformlayout(cont = m.editor)
m.name.ge <- gedit(label = "Model name", width = 60, cont = m.e.gfl)
m.ff.gc <- gcombobox(c("min", "max"), label = "Use of formation fractions", 
                     cont = m.e.gfl)
svalue(m.ff.gc) <- m.cur$use_of_ff
m.add_observed <- gbutton("Add observed variable", cont = m.editor,
  handler = add_observed_handler)
m.add_observed$call_Ext("disable")


# Model specification {{{3
m.e.rows <- m.e.obs <- m.e.type <- m.e.to <- m.e.sink <- list()

# Show the model specification {{{4
show_m_spec <- function() {
  for (obs.i in seq_along(m.cur$spec)) {
    obs.name <- names(m.cur$spec)[[obs.i]]

    add_observed(obs.i)

    svalue(m.e.obs[[obs.i]]) <<- obs.name
    svalue(m.e.type[[obs.i]]) <<- m.cur$spec[[obs.i]]$type
    obs.to = m.cur$spec[[obs.i]]$to
    obs.to_string_R = paste(obs.to, collapse = ", ")
    obs.to_string_JS = paste0("['", paste(obs.to, collapse = "', '"), "']")
    # Set R and Ext values separately, as multiple selections are not supported
    svalue(m.e.to[[obs.i]]) <<- obs.to_string_R
    m.e.to[[obs.i]]$call_Ext("select", String(obs.to_string_JS))
  }
}
show_m_spec()


# center: Fit configuration {{{1
f.config  <- gframe("", horizontal = FALSE, cont = center, 
                    label = "Configuration")
# center: Results viewer {{{1
r.viewer  <- gframe("", horizontal = FALSE, cont = center, 
                    label = "Result")
svalue(center) <- 1
# right: Viewing area {{{1
# Workflow {{{2
workflow.gg <- ggroup(cont = right, label = "Workflow", width = 480,  height = 570,
                      ext.args = list(layout = list(type="vbox", align = "center")))

workflow.png <- get_tempfile(ext = ".png")
file.copy(system.file("GUI/gmkin_workflow_434x569.png", package = "gmkin"), workflow.png)
workflow.gi <- gimage(workflow.png, size = c(434, 569), label = "Workflow", cont = workflow.gg)

# # Kinetic Data {{{3
ds.e.gdf <- gdf(ds.cur$data, label = "Data editor", name = "Kinetic data", 
                width = 488, height = 600, cont = right)

workflow.png <- get_tempfile(ext = ".png")
file.copy(system.file("GUI/gmkin_workflow_434x569.png", package = "gmkin"), workflow.png)
workflow.gi <- gimage(workflow.png, size = c(434, 569), label = "Workflow", cont = workflow.gg)
# Model Gallery {{{3
m.g.gg <- ggroup(cont = right, label = "Model gallery", width = 480,  height = 570,
                 ext.args = list(layout = list(type="vbox", align = "center")))

# Manual {{{2
gmkin_manual <- readLines(system.file("GUI/gmkin_manual.html", package = "gmkin"))
gmb_start <- grep("", gmkin_manual)
gmb_end <- grep("", gmkin_manual)
gmkin_manual_body <- gmkin_manual[gmb_start:gmb_end]

manual.gh <- ghtml(label = "Manual", paste0("
", paste(gmkin_manual_body, collapse = '\n'), "
"), width = 460, cont = right) # Changes {{{2 gmkin_news <- markdownToHTML(system.file("NEWS.md", package = "gmkin"), fragment.only = TRUE, ) changes.gh <- ghtml(label = "Changes", paste0("
", gmkin_news, "
"), width = 460, cont = right) # Things to do in the end # Update meta objects and their depending widgets svalue(right) <- 1 update_p.df() # vim: set foldmethod=marker ts=2 sw=2 expandtab: {{{1