Bug 574654 - Remove browser.tabs.tabMinWidth and browser.tabs.tabMaxWidth in favor of CSS. r=mano

browser/app/profile/firefox.js

@@ -320,8 +320,6 @@ pref("browser.tabs.loadInBackground", true);
 pref("browser.tabs.opentabfor.middleclick", true);
 pref("browser.tabs.loadDivertedInBackground", false);
 pref("browser.tabs.loadBookmarksInBackground", false);
-pref("browser.tabs.tabMinWidth", 100);
-pref("browser.tabs.tabMaxWidth", 250);
 pref("browser.tabs.tabClipWidth", 140);
 
 // Where to show tab close buttons:

browser/base/content/browser.css

@@ -22,12 +22,18 @@ tabbrowser {
 
 .tabbrowser-tab {
   -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-tab");
+}
+
+.tabbrowser-tab:not([pinned]) {
   -moz-box-flex: 100;
+  max-width: 250px;
+  min-width: 100px;
+  width: 0;
 }
 
 .tabbrowser-tab:not([fadein]) {
-  max-width: 1px !important;
-  min-width: 1px !important;
+  max-width: 1px;
+  min-width: 1px;
 }
 
 .tabbrowser-tab[fadein]:not([pinned]) {
@@ -48,9 +54,6 @@ tabbrowser {
 
 .tabbrowser-tab[pinned] {
   position: fixed;
-  -moz-box-flex: 0;
-  min-width: 0 !important;
-  max-width: none !important;
 }
 
 .tabbrowser-tab[pinned] > .tab-text {

browser/base/content/tabbrowser.xml

@@ -1210,9 +1210,6 @@
               t.setAttribute("label", aURI);
 
             t.setAttribute("crop", "end");
-            t.style.maxWidth = this.tabContainer.mTabMaxWidth + "px";
-            t.style.minWidth = this.tabContainer.mTabMinWidth + "px";
-            t.width = 0;
             t.setAttribute("validate", "never");
             t.setAttribute("onerror", "this.removeAttribute('image');");
             t.className = "tabbrowser-tab";
@@ -2505,8 +2502,6 @@
     <implementation implements="nsIDOMEventListener">
       <constructor>
         <![CDATA[
-          this.mTabMinWidth = Services.prefs.getIntPref("browser.tabs.tabMinWidth");
-          this.mTabMaxWidth = Services.prefs.getIntPref("browser.tabs.tabMaxWidth");
           this.mTabClipWidth = Services.prefs.getIntPref("browser.tabs.tabClipWidth");
           this.mCloseButtons = Services.prefs.getIntPref("browser.tabs.closeButtons");
           this._closeWindowWithLastTab = Services.prefs.getBoolPref("browser.tabs.closeWindowWithLastTab");
@@ -2514,9 +2509,6 @@
           var tab = this.firstChild;
           tab.setAttribute("label",
                            this.tabbrowser.mStringBundle.getString("tabs.emptyTabTitle"));
-          tab.style.minWidth = this.mTabMinWidth + "px";
-          tab.style.maxWidth = this.mTabMaxWidth + "px";
-          tab.width = 0;
           tab.setAttribute("crop", "end");
           tab.setAttribute("validate", "never");
           tab.setAttribute("onerror", "this.removeAttribute('image');");

browser/base/content/test/browser_overflowScroll.js

@@ -25,7 +25,7 @@ function test() {
 function doTest() {
   tabstrip.smoothScroll = false;
 
-  var tabMinWidth = gPrefService.getIntPref("browser.tabs.tabMinWidth");
+  var tabMinWidth = parseInt(getComputedStyle(gBrowser.selectedTab, null).minWidth);
   var tabCountForOverflow = Math.ceil(width(tabstrip) / tabMinWidth * 3);
   while (tabContainer.childNodes.length < tabCountForOverflow)
     gBrowser.addTab("about:blank", {skipAnimation: true});

browser/components/sessionstore/test/browser/browser_480148.js

@@ -83,8 +83,7 @@ function test() {
   let numTests = 4;
   let completedTests = 0;
 
-  // access the pref service just once
-  let tabMinWidth = gPrefService.getIntPref("browser.tabs.tabMinWidth");
+  let tabMinWidth = parseInt(getComputedStyle(gBrowser.selectedTab, null).minWidth);
 
   function runTest(testNum, totalTabs, selectedTab, shownTabs, order) {
     let test = {