From 005375cc3358e63e75d918e171a25a7104f8f91f Mon Sep 17 00:00:00 2001
From: Asa Kusuma <asa.kusuma@gmail.com>
Date: Fri, 8 Aug 2008 19:39:06 +0000
Subject: [PATCH] Adds tag cloud feature. Use about:config to turn on.

---
 .../content/zotero/bindings/tagselector.xml   | 79 ++++++++++++++++++-
 defaults/preferences/zotero.js                |  3 +
 2 files changed, 80 insertions(+), 2 deletions(-)

diff --git a/chrome/content/zotero/bindings/tagselector.xml b/chrome/content/zotero/bindings/tagselector.xml
index 771e9bfc9..be6507f21 100644
--- a/chrome/content/zotero/bindings/tagselector.xml
+++ b/chrome/content/zotero/bindings/tagselector.xml
@@ -177,19 +177,25 @@
 							tagsToggleBox.removeChild(tagsToggleBox.firstChild);
 						}
 						
-						// Regenerate list
+						
+						
+						var i=0;
 						for (var tagID in this._tags) {
 							// If the last tag was the same, add this tagID and tagType to it
 							if (tagsToggleBox.lastChild &&
 									tagsToggleBox.lastChild.getAttribute('value') == this._tags[tagID].name) {
 								tagsToggleBox.lastChild.setAttribute('tagID', tagsToggleBox.lastChild.getAttribute('tagID') + '-' + tagID);
 								tagsToggleBox.lastChild.setAttribute('tagType', tagsToggleBox.lastChild.getAttribute('tagType') + '-' + this._tags[tagID].type);
+								
+								
 								continue;
 							}
 							
 							var label = document.createElement('label');
 							label.setAttribute('onclick', "this.parentNode.parentNode.parentNode.handleTagClick(event, this)");
 							label.className = 'zotero-clicky';
+							
+							
 							label.setAttribute('value', this._tags[tagID].name);
 							label.setAttribute('tagID', tagID);
 							label.setAttribute('tagType', this._tags[tagID].type);
@@ -199,7 +205,7 @@
 							label.setAttribute('ondragdrop', 'nsDragAndDrop.drop(event, this.parentNode.parentNode.parentNode.dragObserver)');
 							tagsToggleBox.appendChild(label);
 						}
-						
+						i++;
 						this._dirty = false;
 					}
 					
@@ -282,7 +288,76 @@
 						}
 					}
 					
+					//start tag cloud code
 					
+					var tagCloud = Zotero.Prefs.get('tagCloud');
+					
+					if(tagCloud) {
+						var labels = tagsToggleBox.getElementsByTagName('label');
+					
+						//loop through displayed labels and find number of linked items
+						var numlinked= [];
+						for (var i=0; i<labels.length; i++){
+							if(labels[i].getAttribute("hidden") != 'true') {
+								var tagIDs = labels[i].getAttribute('tagID').split('-');
+								
+								
+								//replace getLinkedItems() with function that gets linked items within the current collection
+								var linked = this._tags[tagIDs[0]].getLinkedItems();
+								
+								numlinked.push(parseInt(linked.length));
+							}	
+						}
+						//
+						numlinked.sort();
+						
+						//Get number of attached items from tag with fewest items
+						var min = numlinked[0];
+						
+						//Get number of attached items from tag with most items
+						var max = numlinked.pop();
+						numlinked.push(max);
+						
+						//Create array of possible tag text sizes
+						var sizes = ["11", "12", "13", "14", "15", "16", "17", "18", "19","20","21","22"];
+						
+						//Number of possible tag sizes
+						var categories = sizes.length;
+						
+						//inc is the size of each size category of tags, in terms of the number of attached items
+						var inc = Math.ceil((max-min)/categories);
+						if(inc<1) {
+							inc = 1;
+						}
+						
+						for (var i=0; i<labels.length; i++){
+							if(labels[i].getAttribute("hidden") != 'true') {
+								var tagIDs = labels[i].getAttribute('tagID').split('-');
+								
+								
+								//replace getLinkedItems() with function that gets linked items within the current collection
+								var linked = this._tags[tagIDs[0]].getLinkedItems();
+								
+								numlink = linked.length;
+								
+								//range is the difference between how many items this tag has and how many items the smallest tag has
+								var range=(numlink-min);
+								
+								//Divide the range by the size of the categories
+								s=range/inc;
+								
+								if(s==categories) {
+									s=categories-1;
+								}
+								var stylestr = 'font-size:'+sizes[s]+'px;';
+								labels[i].setAttribute('style',stylestr);
+							}	
+						}
+					}
+					
+					//end tag cloud code
+					
+
 					this.updateNumSelected();
 					this._empty = empty;
 					this.id('tags-toggle').setAttribute('collapsed', empty);
diff --git a/defaults/preferences/zotero.js b/defaults/preferences/zotero.js
index 2f957c60b..a734c4454 100644
--- a/defaults/preferences/zotero.js
+++ b/defaults/preferences/zotero.js
@@ -35,6 +35,9 @@ pref("extensions.zotero.lastAbstractExpand",0);
 pref("extensions.zotero.lastRenameAssociatedFile", false);
 pref("extensions.zotero.lastViewedFolder", 'L');
 
+//Tag Cloud
+pref("extensions.zotero.tagCloud", true);
+
 // Keyboard shortcuts
 pref("extensions.zotero.keys.overrideGlobal", false);
 pref("extensions.zotero.keys.openZotero", 'Z');