inst/reactive/tableclicks.R

In joannawolthuis/MetaboShiny: Interactive Direct Infusion Metabolomics Analysis and Annotation

# check which adducts are currently selected by user
shiny::observe({
  wanted.adducts <- lcl$vectors$calc_adducts[input$magicball_add_tab_rows_selected]
  # ---------
  lcl$vectors$add_list <<- wanted.adducts
})

# creates observers for click events in the tables defined above
lapply(c("tt",
         "fc",
         "aov",
         "volcano",
         "asca",
         "meba",
         "pca_load",
         "plsda_load",
         "enrich_pw",
         #"ml",
         "ml_importance",
         "corr",
         "combi",
         "mummi_detail",
         "venn"), FUN=function(table){

  shiny::observeEvent(input[[paste0(table, "_tab_rows_selected")]], {
    curr_row = input[[paste0(table, "_tab_rows_selected")]]
    # do nothing if not clicked yet, or the clicked cell is not in the 1st column
    
    lcl$curr_table <<- table
    
    if (is.null(curr_row)) return()

    which_aov = if(mSet$settings$exp.type %in% c("t", "2f", "t1f")) "aov2" else "aov"
    
    res_tbl <- data.table::as.data.table(switch(table,
                                                corr = mSet$analSet$corr$cor.mat,
                                                tt = mSet$analSet$tt$sig.mat,
                                                combi = mSet$analSet$combi$sig.mat,
                                                fc = mSet$analSet$fc$sig.mat,
                                                volcano = mSet$analSet$volcano$sig.mat,
                                                pca_load = mSet$analSet$pca$rotation,
                                                plsda_load = mSet$analSet$plsda$vip.mat,
                                                asca = mSet$analSet$asca$sig.list$Model.ab,
                                                aov = mSet$analSet[[which_aov]]$sig.mat,
                                                enrich_pw = enrich$current,
                                                rf = vip.score,
                                                ml_importance = lcl$tables$ml_imp,
                                                meba = mSet$analSet$MB$stats,
                                                plsda_vip = plsda_tab,
                                                mummi_detail = lcl$tables$mummi_detail,
                                                venn = lcl$tables$venn_overlap),
                                         keep.rownames = T)
    if(nrow(res_tbl) > 0){
      # get current selected compound from the original table (needs to be available in global env)
      my_selection$mz <- res_tbl[curr_row, rn]
      # --- ggplot ---
      if(table == 'meba'){ # meba needs a split by time
        plotmanager$make <- "meba"
      }else if(table %in% c('aov2', 'asca')){ # asca needs a split by time
        plotmanager$make <- "multigroup"
      }else{
        plotmanager$make <- "summary"
      }
    }
  })
})


shiny::observeEvent(input$enrich_tab_rows_selected,{
  curr_row <- input$enrich_tab_rows_selected
  if (is.null(curr_row)) return()
  # -----------------------------
  
  curr_pw <- rownames(enrich$overview)[curr_row]
  pw_i <- which(mSet$analSet$enrich$path.nms == curr_pw)
  cpds = unlist(mSet$analSet$enrich$path.hits[[pw_i]])
  hit_tbl = data.table::as.data.table(mSet$analSet$enrich$mumResTable)
  myHits <- hit_tbl[Matched.Compound %in% unlist(cpds)]
  myHits$Mass.Diff <- as.numeric(myHits$Mass.Diff)/(as.numeric(myHits$Query.Mass)*1e-6)
  myHits <- myHits[,c("Query.Mass", 
                      "Compound.Name", 
                      "Matched.Compound", 
                      "Matched.Form", 
                      "Mass.Diff")]
  colnames(myHits) <- c("rn", "compoundname", "identifier", "adduct", "dppm")
  
  # --- FIX ADDUCTS ---
  if(any(!(as.character(myHits$rn) %in% colnames(mSet$dataSet$norm)))){
    myHits$rn <- sapply(as.character(myHits$rn), function(mz){
      orig.mzs = gsub("-", "", colnames(mSet$dataSet$norm))
      unalt.match = mz %in% orig.mzs
      if(unalt.match){
        return(mz) 
      }else{
        alt.match = paste0(mz, "0") %in% orig.mzs
        if(alt.match){
          paste0(mz, "0")
        }else{
          mz
        }
      }
    })
    adduct.addition = ifelse(myHits$adduct %in% adducts[Ion_mode == "positive"]$Name, "", "-")
    myHits$rn = paste0(myHits$rn, adduct.addition)
  }
  
  sig.hits = mSet$analSet$enrich$orig.input[mSet$analSet$enrich$orig.input$significant, "m.z"]
  myHits$significant = ifelse(myHits$rn %in% sig.hits, "yes", "no")  
  
  enrich$current <- myHits
  
})

# triggers on clicking a row in the match results table
shiny::observeEvent(input$match_tab_rows_selected,{
  curr_row <- input$match_tab_rows_selected # get current row
  if (is.null(curr_row)) return()
  # - - - - - - - - - - - - - - - - - - - - - -
  my_selection$name <- shown_matches$forward_unique[curr_row,'compoundname'][[1]] # get current structure
  my_selection$form <- unlist(shown_matches$forward_unique[curr_row,'baseformula']) # get current formula
  my_selection$struct <- unlist(shown_matches$forward_unique[curr_row,'structure']) # get current formula

  toClipboard = switch(input$matchAutocopy,
                       SMILES = my_selection$struct,
                       formula = my_selection$form,
                       name = my_selection$name)
  if(input$autocopy){
    #clipr::write_clip(toClipboard, allow_non_interactive = TRUE)
    shinyjs::runjs(stringr::str_wrap(gsubfn::fn$paste("
  var textArea = document.createElement('textarea');
  textArea.style.position = 'fixed';
  textArea.style.top = 0;
  textArea.style.left = 0;

  textArea.style.width = '2em';
  textArea.style.height = '2em';

  textArea.style.padding = 0;

  textArea.style.border = 'none';
  textArea.style.outline = 'none';
  textArea.style.boxShadow = 'none';

  textArea.style.background = 'transparent';

  textArea.value = '$toClipboard';

  document.body.appendChild(textArea);
  textArea.focus();
  textArea.select();

  try {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    console.log('Copying text command was ' + msg);
  } catch (err) {
    console.log('Oops, unable to copy');
  }

  document.body.removeChild(textArea);"), width=10000))
    shiny::updateTextInput(session,
                           "wordcloud_searchTerm",
                           value = as.character(toClipboard))
  }
  
  })


shiny::observeEvent(input$browse_tab_rows_selected,{
  curr_row <- input$browse_tab_rows_selected
  if (is.null(curr_row)) return()
  # -----------------------------
  curr_def <- browse_content$table[curr_row, description]
  output$desc_ui <- shiny::renderText(curr_def)
  my_selection$struct <- browse_content$table[curr_row,c('structure')][[1]]
  #my_selection$form <- unlist(browse_content$table[curr_row,'formula']) # get current formula
})

# triggers on clicking a row in the reverse hit results table
shiny::observeEvent(input$hits_tab_rows_selected,{
  curr_row <- input$hits_tab_rows_selected # get current row
  if (is.null(curr_row)) return()
  my_selection$mz <- shown_matches$reverse[curr_row,'query_mz'][[1]]
})